Okay, we are given 2112 and 55. Let's add them up step by step.

Step 1: We'll start by adding the digits 2 & 5 in column 1 and get 7.

Step 2: We'll start by adding the digits 1 & 5 in column 2 and get 6.

Step 3: We'll start by adding the digits 1 & 0 in column 3 and get 1.

Step 4: We'll start by adding the digits 2 & 0 in column 4 and get 2.

So, 2112 + 55 = 2167.

