Calculate Area of a Rectangle
EasyGEOMETRYBasic OperationsMATH
### Description
Write a function that takes the length and width of a rectangle as input and returns the area of the rectangle.
### Constraints
1 <= length, width <= 10^4
### Example
Input: 5,10
Output: 50
Examples
Example 1
Input: 5,10
Output: 50
Example 2
Input: 100,200
Output: 20000