# Problem: Daily Earnings

Ivan is a programmer in an **American company** and he **works** at home **approximately N days per month** by earning **approximately M dollars per day**. At the end of the year, Ivan **receives a bonus**, which **equals 2.5 of his monthly salaries. 25% of his annual salary goes for taxes**. Write a program that calculates **what is the amount of Ivan's net average earnings in leva per day**, as he spends them in Bulgaria. It is accepted that **one year has exactly 365 days. The exchange rate of dollar** to lev will be **read from the console**.

## Input Data

**Three numbers** are read from the console.

- On the first line –
**work days per month**. An integer within the range of [**5 … 30**]. - On the second line –
**daily earnings**. A floating-point number within the range of [**10.00 … 2000.00**]. - On the third line –
**exchange rate of dollar to lev**/1 dollar = X lev/. A floating-point number within the range of [**0.99 … 1.99**].

## Output Data

Print **one number** on the console - **the daily earnings in lev**. The result will be **rounded up to the second symbol after the decimal point**.

## Examples

Input | Output |
---|---|

21 75.00 1.59 |
74.61 |

**Explanation**:

**One monthly salary**= 21 * 75 = 1575 dollars.**Annual income**= 1575 * 12 + 1575 * 2.5 = 22837.5 dollars.**Taxes**= 25% of 22837.5 = 5709.375 leva.**Net annual income**= 17128.125 dollars = 27233.71875 leva.**Average earnings per day**= 27233.71875 / 365 = 74.61 leva.

Input | Output | Input | Output |
---|---|---|---|

15 105 1.71 |
80.24 | 22 199.99 1.50 |
196.63 |

## Tips and Tricks

Firstly, we have to analyze the task and think of a way to solve it. Then, we will choose data types and, finally, we will write the code.

### Idea for Solution

Let's first calculate **how much the monthly salary** of Ivan is. We do that by **multiplying the working days per month by his daily earnings**. Firstly, we multiply the number by 12, so as to calculate his salary for 12 months, and then, we multiply it **by 2.5 ** in order to calculate the bonus. After having summed up the two values, we calculate his **annual income**. Then, we **divide 25% of it**. We can do that by multiplying the total income by **0.25** and divide the result by it. Depending on the exchange rate, we **exchange the dollars to leva** and after that we **divide the result by 365 (days per year)**.

### Choosing Data Types

**The working days** per month are given as **an integer**, therefore, we can declare a variable of ** int type** to store their value. For both

**the earned money**and

**the exchange rate of dollar to lev**, we will receive

**a floating-point number**, therefore, we will use

**. As**

`double`

**is the data type with**

`double`

**the higher scope**, and the output should also be

**a floating-point number**, we use

**for the other variables that we create as well.**

`double`

### Reading the Input Data and Doing the Calculations

Again: after we have an idea on how to solve the problem and we have considered the data types that we are going to use, we can start **writing the program**. As in the previous tasks, we can divide the solution into three smaller tasks:

**Reading the input from the console**.**Doing the calculations**.**Printing the output**on the console.

**We declare the variables** that we are going to use by trying to choose **meaningful names**. With ** Console.ReadLine(…)** we read the input numbers from the console and we

**convert**the input string to

**or**

`int`

**with**

`double`

**.**

`int/double.Parse(…)`

We do the calculations:

We could write an expression that calculates the annual income without brackets as well. As multiplication is an operation that has a higher priority over addition, it will be performed first. Despite that, **writing brackets is recommended** when using more operators, as this way the code is **easily readable** and chances of making a mistake are smaller.

### Printing the Result

Finally, we have to print the result on the console. We notice that **the number has to be rounded up to the second symbol after the decimal point**. In order to do that, we can use a **placeholder - an item that will be replaced by a particular value when printing**. In C#, a digit surrounded by curly brackets is used for a **placeholder**. As **in programming counting starts from 0**, the expression ** {0}** means that it will be replaced by the first given argument. We can format an integer or a floating-point number by using

**F**or

**f**. That is followed by a whole positive number, which specifies the number of digits after the point (you can read more about formatting here: (Svetlin Nakov, Veselin Kolev and team: "Programming Basics with C#", page. 155-158):

## Testing in the Judge system

Test your solution here: https://judge.softuni.bg/Contests/Practice/Index/505#4.