Let's break this down. We're going to add 216 and 30 together.

Step 1: We'll start by adding the digits 6 & 0 in column 1 and get 6.

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

Step 3: We'll start by adding the digits 2 & 0 in column 3 and get 2.

So, 216 + 30 = 246.

