Description
For elephants, we use the "EMI" (Elephant Mass Index) to assess their health status.
To calculate an elephant's EMI, we use the formula below:
w = weight, h = height.
Elephants perform calculations using the double data type, and the output should be formatted to 6 decimal places.
You don't need to worry about the units; just calculate using the given values.
Input
The first line contains two integers: w, and h, respectively.
1 ≤ h ≤ w ≤ 10000
Output
Output the answer following the specified formatting rules.
Note that you do NOT need to print '\n' at the end of the output.