Answer:
The answer is 3,351.
Explanation:
If you're doing this without a calculator, you can follow these steps.
Starting with 260, keep adding 260, until you've got a number greater than 871. We know we need 3 digits here, since 260 is greater than 8 and 87.
In this case, we have 260, 520, 780, and 1040. 780 is less than 871, so our first number will be 3.
871 - 780 is 91, which is our remainder for this step. So, we're left with 91,260.
Now, we're adding 260 until we've got a number less than 912. We already know that 780 is less than 912, so we've got another 3.
912 - 780 = 132, which is our remainder for this step. Now, we're left with 13,260.
Continuing the same logic, 260, 520, 780, 1040, and 1,300. The next number is 5.
1,326 - 1,300 = 26.
What's left now is 260, therefore we have 1.
3,351 is the answer.