Tom is very weak at maths, his teacher gave him a simple problem of dividing two numbers but as usual Tom is having difficulty solving the problem. Can you help tom solve the problem ?

Teacher has given him 3 numbers a, b and c. The task is to divide a by b and write the answer upto c decimal places.

Input:

The first line of input contains an integer T denoting the number of test cases.
Each line of test case contains 3 numbers a, b and c as described in the question.

Output:

For each test case, output the required division of a/b upto c decimal places.

Constraints:

1 ≤ T ≤ 100,

1 ≤ a,b ≤ 100000

0 ≤ c ≤ 100000

SAMPLE INPUT
3
21 4 0
5 4 3
22 7 10

SAMPLE OUTPUT
5
1.250
3.1428571428

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