Let's solve this addition problem. We have 211 and 268, and we need to add them together.

Step 1: We'll start by adding the digits 1 & 8 in column 1 and get 9.

Step 2: We'll start by adding the digits 1 & 6 in column 2 and get 7.

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

So, 211 + 268 = 479.

