Biscuit Generator

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.

Examples

Input

3 5 7

Output

10

Input

3 2 9

Output

6

Input

20 20 19

Output

0

inputFormat

input are integers.

• 1 \leq A, B, T \leq 20

Input

Input is given from Standard Input in the following format:

A B T

outputFormat

Output

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

Examples

Input

3 5 7

Output

10

Input

3 2 9

Output

6

Input

20 20 19

Output

0

样例

3 5 7

10