Write a program to display the floating number with a given precision value.

**Input:**

The first line of input contains integer T denoting the number of test cases. For each test case, we take two inputs, one floating number a** **and an integer **b** for the precision of that floating number.

**Output:**

For each test case we get a single line output i.e the floating number with given precision.

**Constraints:**

1<=T<=100;

1<=b<=20;

**Example:**

**Input:**

2

4.567 2

8.92 3

**Output:**

4.6

8.92

Author: Vanshika_pec

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