The answer is 17900.. Simply add the numbers together arithmetically as you would for the problem two plus two. To check your work, a calculator is the best option.
17,800
The salary is 9000 to 8900
1523
9000 + 9000 = 18000
9000
9000 plus 80000 = 89000
how many numbers exactly have 4 digits ? 8900, 8999, 9000, 9999
40000 + 600 + 9000 + 49614 = 99214
.78
1.25 + 9000 = 9001.25
8900
13,000