Fraction to Floating-Point Conversion

Given two integers \(a\) and \(b\) representing the numerator and denominator respectively, compute the fraction \(\dfrac{a}{b}\) as a double precision floating-point number with exactly 9 digits after the decimal point.

inputFormat

The input contains two integers \(a\) and \(b\) separated by a space.

outputFormat

Output the result of \(\dfrac{a}{b}\) in double precision format with exactly 9 digits after the decimal point.

sample

1 2

0.500000000