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Score : $100$ points

### 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