Let's solve this addition problem. We have 1622780890 and 4770800460, and we need to add them together.

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

Step 2: We'll start by adding the digits 9 & 6 in column 2 and get 15.
We'll write down the last digit 5 and carry the 1 to the next column.

Step 3: We'll start by adding the digits 8 & 4 in column 3 and get 13.
We'll write down the last digit 3 and carry the 1 to the next column.

Step 4: We'll start by adding the digits 0 & 0 in column 4 and get 1.

Step 5: We'll start by adding the digits 8 & 0 in column 5 and get 8.

Step 6: We'll start by adding the digits 7 & 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 2 & 0 in column 7 and get 3.

Step 8: We'll start by adding the digits 2 & 7 in column 8 and get 9.

Step 9: We'll start by adding the digits 6 & 7 in column 9 and get 13.
We'll write down the last digit 3 and carry the 1 to the next column.

Step 10: We'll start by adding the digits 1 & 4 in column 10 and get 6.

So, 1622780890 + 4770800460 = 6393581350.

