Answer
8580
Work Step by Step
Add all the digits in the ones column and place the result, 0, in the ones column of the sum.
Add all the digits in the tens column and place the result, 8, in the tens column of the sum.
Add all the digits in the hundreds column. The result is 15. Place the 5 in the hundreds column of the sum and carry the 1 to the thousands column.
Add all the digits in the thousands column, including the 1 that was carried over from the prior step, and place the result, 8, in the thousands column of the sum.
The result is 8580.
