Not to worry, we've got 1104 and 85. Let's get to adding them!

Step 1: We'll start by adding the digits 4 & 5 in column 1 and get 9.

Step 2: We'll start by adding the digits 0 & 8 in column 2 and get 8.

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 & 0 in column 4 and get 1.

So, 1104 + 85 = 1189.

