No problem, let's work through this together. We're starting with 1833309216 and 6834803769 and adding them all up.

Step 1: We'll start by adding the digits 6 & 9 in column 1 and get 15.
We'll write down the last digit 5 and carry the 1 to the next column.

Step 2: We'll start by adding the digits 1 & 6 in column 2 and get 8.

Step 3: We'll start by adding the digits 2 & 7 in column 3 and get 9.

Step 4: We'll start by adding the digits 9 & 3 in column 4 and get 12.
We'll write down the last digit 2 and carry the 1 to the next column.

Step 5: We'll start by adding the digits 0 & 0 in column 5 and get 1.

Step 6: We'll start by adding the digits 3 & 8 in column 6 and get 11.
We'll write down the last digit 1 and carry the 1 to the next column.

Step 7: We'll start by adding the digits 3 & 4 in column 7 and get 8.

Step 8: We'll start by adding the digits 3 & 3 in column 8 and get 6.

Step 9: We'll start by adding the digits 8 & 8 in column 9 and get 16.
We'll write down the last digit 6 and carry the 1 to the next column.

Step 10: We'll start by adding the digits 1 & 6 in column 10 and get 8.

So, 1833309216 + 6834803769 = 8668112985.

