871525 ÷ 80 
Let's see how many times 80 fits into 871525.

On to step 1:
The number 80 fits into 8 0 times, leaving a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Take the next digit (7) from the dividend and append it to 8, then repeat: 87 / 80

Step 2:
When dividing 87 by 80, we get 1 with a remainder of 7.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Deduct 80 from 87 and we're left with 7.
Grab the next digit (1) from the dividend, add it to 7, then carry on: 71 / 80

Moving on to step 3:
80 can be fit into 71 0 times, resulting in a remainder of 71.
The next digit of our result is 0. 
Result so far: 10.0
Subtract 0 from 71 to get 71.
Grab the next digit (5) from the dividend, add it to 71, then carry on: 715 / 80

Step 4:
715 divided by 80 is 8 with a remainder of 75.
Write down 8 as next digit of the result. 
Result so far: 108.0
Deduct 640 from 715 and we're left with 75.
Fetch the next digit (2) from the dividend, attach it to 75 and continue: 752 / 80

Step 5:
When dividing 752 by 80, we get 9 with a remainder of 32.
The next digit of our result is 9. 
Result so far: 1089.0
If we take 720 away from 752, we end up with 32.
Append the next digit (5) from the dividend to 32 and continue with: 325 / 80

Advancing to step 6:
The number 80 fits into 325 4 times, leaving a remainder of 5.
Write down 4 as next digit of the result. 
Result so far: 10894.0
If we take 320 away from 325, we end up with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Step 7:
80 goes into 50 0 times with a remainder of 50.
The number 0 becomes the next digit in our result. 
Result so far: 10894.0
The remainder is 50 after subtracting 0 from 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Step 8:
The number 80 fits into 500 6 times, leaving a remainder of 20.
Write down 6 as next digit of the result. 
Result so far: 10894.06
Subtract 480 from 500 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Going ahead to step 9:
When dividing 200 by 80, we get 2 with a remainder of 40.
Record the quotient 2 as the next digit in the result. 
Result so far: 10894.062
If we subtract 160 from 200, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Step 10:
80 can be fit into 400 5 times, resulting in a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 10894.0625
Deduct 400 from 400 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 11:
80 can be fit into 0 0 times, resulting in a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 10894.0625
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 12:
The number 80 fits into 0 0 times, leaving a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 10894.0625
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The quotient of the division is 10894.0625, and the remainder is 0.0.