13253 - Frieza!!   

Description

During his fight, Trunks finally found an opening to strike Frieza with his sword. He plans to cut him into many pieces quickly. But his mother is a scientist and wants him to cut Frieza into equal sizes or else she will be disappointed in him. Luckily for Trunks, he has a program in his watch that can help him calculate it.

 

The program in his watch requires 2 variables:

1) F: The volume of Frieze and

2) S: The amount of slices Trunks plans to do

so F/S is the volume of each chunk of Frieza.

You need to write the program that helps Trunks with his calculations. The result of each calculation must also be rounded off to 2 decimal places.

Input

The input will contain 2 integers F and S.

Output

Print the results of the calculation rounded off to 2 decimal places, otherwise print "Error".

No newline is needed.

Sample Input  Download

Sample Output  Download

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