We've got two numbers: 3068958581 and 4498656954. Let's find their sum.

Step 1: We'll start by adding the digits 1 & 4 in column 1 and get 5.

Step 2: We'll start by adding the digits 8 & 5 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 5 & 9 in column 3 and get 15.
We'll write down the last digit 5 and carry the 1 to the next column.

Step 4: We'll start by adding the digits 8 & 6 in column 4 and get 15.
We'll write down the last digit 5 and carry the 1 to the next column.

Step 5: We'll start by adding the digits 5 & 5 in column 5 and get 11.
We'll write down the last digit 1 and carry the 1 to the next column.

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

Step 7: We'll start by adding the digits 8 & 8 in column 7 and get 17.
We'll write down the last digit 7 and carry the 1 to the next column.

Step 8: We'll start by adding the digits 6 & 9 in column 8 and get 16.
We'll write down the last digit 6 and carry the 1 to the next column.

Step 9: We'll start by adding the digits 0 & 4 in column 9 and get 5.

Step 10: We'll start by adding the digits 3 & 4 in column 10 and get 7.

So, 3068958581 + 4498656954 = 7567615535.

