Alright, let's solve this problem step by step. We have 2045 and 1443 and we're adding them together.

Step 1: We'll start by adding the digits 5 & 3 in column 1 and get 8.

Step 2: We'll start by adding the digits 4 & 4 in column 2 and get 8.

Step 3: We'll start by adding the digits 0 & 4 in column 3 and get 4.

Step 4: We'll start by adding the digits 2 & 1 in column 4 and get 3.

So, 2045 + 1443 = 3488.

