Ready to do some math? We're starting with 2498551290 and 9599798741 and adding them up.

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

Step 2: We'll start by adding the digits 9 & 4 in column 2 and get 13.
We'll write down the last digit 3 and carry the 1 to the next column.

Step 3: We'll start by adding the digits 2 & 7 in column 3 and get 10.
We'll write down the last digit 0 and carry the 1 to the next column.

Step 4: We'll start by adding the digits 1 & 8 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 5 & 9 in column 5 and get 15.
We'll write down the last digit 5 and carry the 1 to the next column.

Step 6: We'll start by adding the digits 5 & 7 in column 6 and get 13.
We'll write down the last digit 3 and carry the 1 to the next column.

Step 7: We'll start by adding the digits 8 & 9 in column 7 and get 18.
We'll write down the last digit 8 and carry the 1 to the next column.

Step 8: We'll start by adding the digits 9 & 9 in column 8 and get 19.
We'll write down the last digit 9 and carry the 1 to the next column.

Step 9: We'll start by adding the digits 4 & 5 in column 9 and get 10.
We'll write down the last digit 0 and carry the 1 to the next column.

Step 10: We'll start by adding the digits 2 & 9 in column 10 and get 12.
We'll write down the last digit 2 and carry the 1 to the next column.

So, 2498551290 + 9599798741 = 12098350031.

