We've got two numbers: 417108163 and 265552280. Let's find their sum.

Step 1: We'll start by adding the digits 3 & 0 in column 1 and get 3.

Step 2: We'll start by adding the digits 6 & 8 in column 2 and get 14.
We'll write down the last digit 4 and carry the 1 to the next column.

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

Step 4: We'll start by adding the digits 8 & 2 in column 4 and get 10.
We'll write down the last digit 0 and carry the 1 to the next column.

Step 5: We'll start by adding the digits 0 & 5 in column 5 and get 6.

Step 6: We'll start by adding the digits 1 & 5 in column 6 and get 6.

Step 7: We'll start by adding the digits 7 & 5 in column 7 and get 12.
We'll write down the last digit 2 and carry the 1 to the next column.

Step 8: We'll start by adding the digits 1 & 6 in column 8 and get 8.

Step 9: We'll start by adding the digits 4 & 2 in column 9 and get 6.

So, 417108163 + 265552280 = 682660443.

