561 - Strange Logic

Strange Logic

Time Limit: 0.5 sec


The Problem

Shawon is a class seven students. He loves to solve math. He is confused in this math problem.


The problem is 

11 x 11 = 4

11 x 22 = 8

11 x 33 = 12


What is the logic behind?  - Shawon says

Can you help him to find the logic?


The Input

Input starts with an integer T(1<=T<=100), denoting the number of test cases. Each test case contains two integers M and N (9<M, N<100).


The Output

For each test case, print "Case X: Y" here X is the case number stating from 1 and Y is the multiplication answer.


Sample Input


11 22

11 33


Sample Output

Case 1: 4

Case 2: 12





Problem Setter: Shahin ShamS