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

2

11 22

11 33

 

Sample Output

Case 1: 4

Case 2: 12

 

 

 

 

Problem Setter: Shahin ShamS