Problem Statement

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 1

3 5 7

Sample Output 1

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.

Sample Input 2

3 2 9

Sample Output 2

6

Sample Input 3

20 20 19

Sample Output 3

0