No problem, let's work through this together. We're starting with 6710675061 and 2707897760 and adding them all up.

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

Step 2: We'll start by adding the digits 6 & 6 in column 2 and get 12.
We'll write down the last digit 2 and carry the 1 to the next column.

Step 3: We'll start by adding the digits 0 & 7 in column 3 and get 8.

Step 4: We'll start by adding the digits 5 & 7 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 7 & 9 in column 5 and get 17.
We'll write down the last digit 7 and carry the 1 to the next column.

Step 6: We'll start by adding the digits 6 & 8 in column 6 and get 15.
We'll write down the last digit 5 and carry the 1 to the next column.

Step 7: We'll start by adding the digits 0 & 7 in column 7 and get 8.

Step 8: We'll start by adding the digits 1 & 0 in column 8 and get 1.

Step 9: We'll start by adding the digits 7 & 7 in column 9 and get 14.
We'll write down the last digit 4 and carry the 1 to the next column.

Step 10: We'll start by adding the digits 6 & 2 in column 10 and get 9.

So, 6710675061 + 2707897760 = 9418572821.

