Ready to do some math? We're starting with 9907341207 and 6591231229 and adding them up.

Step 1: We'll start by adding the digits 7 & 9 in column 1 and get 16.
We'll write down the last digit 6 and carry the 1 to the next column.

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

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

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

Step 5: We'll start by adding the digits 4 & 3 in column 5 and get 7.

Step 6: We'll start by adding the digits 3 & 2 in column 6 and get 5.

Step 7: We'll start by adding the digits 7 & 1 in column 7 and get 8.

Step 8: We'll start by adding the digits 0 & 9 in column 8 and get 9.

Step 9: We'll start by adding the digits 9 & 5 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 9 & 6 in column 10 and get 16.
We'll write down the last digit 6 and carry the 1 to the next column.

So, 9907341207 + 6591231229 = 16498572436.

