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Description

Given two integers $a$ and $b$ as the numerator and denominator, respectively, calculate the floating-point value of the fraction $\dfrac{a}{b}$ (as a double-precision floating-point number, rounded to 9 decimal places).

Input Format

Input consists of a single line with two integers $a$ and $b$.

Output Format

Output a single line with the floating-point value of the fraction $\dfrac{a}{b}$ (as a double-precision floating-point number, rounded to 9 decimal places).

Sample

5 7

0.714285714