I have a very simple problem for you. Given two integers $A$ and $B$, your job is to calculate the **Sum** of $A + B$.

The first line of the input contains an integer $T(1\le T\le 20)$ which means the number of test cases. Then $T$ lines follow, each line consists of two positive integers, $A$ and $B$. Notice that the integers are very large, that means you **should not** process them by using 32-bit integer. You may assume the **length** of each integer will not exceed $1000$.

For each test case, you should output two lines. The first line is `Case #:`, `#` means the number of the test case. The second line is the an equation `A + B = Sum`, `Sum` means the result of `A + B`. You may assume the **length** of `Sum` will not exceed $1000$. Note there are some spaces int the equation. Output a blank line between two test cases.