Ready to do some math? We're starting with 5903519198 and 3994104071 and adding them up.

Step 1: We'll start by adding the digits 8 & 1 in column 1 and get 9.

Step 2: We'll start by adding the digits 9 & 7 in column 2 and get 16.
We'll write down the last digit 6 and carry the 1 to the next column.

Step 3: We'll start by adding the digits 1 & 0 in column 3 and get 2.

Step 4: We'll start by adding the digits 9 & 4 in column 4 and get 13.
We'll write down the last digit 3 and carry the 1 to the next column.

Step 5: We'll start by adding the digits 1 & 0 in column 5 and get 2.

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

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

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 & 9 in column 9 and get 18.
We'll write down the last digit 8 and carry the 1 to the next column.

Step 10: We'll start by adding the digits 5 & 3 in column 10 and get 9.

So, 5903519198 + 3994104071 = 9897623269.

