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.
Input: 2 4.567 2 8.92 3 Output: 4.6 8.92