Problem Description

Thanks to DISCO's technology for making semiconductors thinner, the number of chips that can fit on one SD card has increased from \( A \) to \( B \). Given that the previous maximum capacity was \( C \) GB, output the new maximum capacity.

Here, the maximum capacity of the SD card is proportional to the number of chips. That is, if the capacity per chip is \( x \) GB, then the maximum capacity with \( k \) chips is \( kx \) GB.

Input Format

The input is given from the standard input in the following format:

\( A \) \( B \) \( C \)

Output Format

Output the answer in one line. Absolute or relative errors within \( 10^{-6} \) are acceptable.

Sample Input and Output

Sample Input #1

2 3 5

Sample Output #1

7.5000000000000000

Sample Input #2

90 120 100

Sample Output #2

133.3333333333333333

Notes/Hints

Constraints

• \( 1 \leq A < B \leq 1,000 \)
• \( 1 \leq C \leq 1,000 \)
• \( A \), \( B \), and \( C \) are all integers

见题面 Input 部分

见题面 Output 部分