Description

Two integers a and b are given as the numerator and denominator respectively, forming the fraction a/b. Calculate its floating-point value (as a double-precision floating-point number, retaining 9 decimal places).

Input Format

The input consists of a single line containing two integers a and b.

Output Format

The output should be a single line, displaying the floating-point value of the fraction a/b (as a double-precision floating-point number, retaining 9 decimal places).

5 7

0.714285714