A biscuit making machine produces B biscuits at the following moments: A seconds, 2A seconds, 3A seconds and each subsequent multiple of A seconds after activation.
Find the total number of biscuits produced within T + 0.5 seconds after activation.

-----Constraints-----
 - All values in input are integers.
 - 1 \leq A, B, T \leq 20

-----Input-----
Input is given from Standard Input in the following format:
A B T

-----Output-----
Print the total number of biscuits produced within T + 0.5 seconds after activation.

-----Sample Input-----
3 5 7

-----Sample Output-----
10

 - Five biscuits will be produced three seconds after activation.
 - Another five biscuits will be produced six seconds after activation.
 - Thus, a total of ten biscuits will be produced within 7.5 seconds after activation.