Sure thing! We've got 1123 and 6003 and we're gonna add them together.

Step 1: We'll start by adding the digits 3 & 3 in column 1 and get 6.

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

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 1 & 6 in column 4 and get 7.

So, 1123 + 6003 = 7126.

