064. Gas Cost
time limit per test
1 second
memory limit per test
256 megabytes
input
standard input
output
standard output

When using an automobile, one often seeks to understand what they will be expected to pay for the usage of gas resources. The cost of driving a certain distance can be calculated based on the miles per gallon(mpg) of the car, the distance traveled, and the cost per gallon currently. Taking in these three values as input, determine the total cost of the trip.

Input

The first line contains three space-separated floating point values that represent the miles per gallon, distance, and cost per gallon respectively.

Output

Output a single floating point value that represents the dollar cost of the designated trip.

Example
Input
10 100 3.5
Output
35.0