871913 ÷ 80 
Our goal is to divide 871913 by 80.

Step 1:
When dividing 8 by 80, we get 0 with a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Grab the next digit (7) from the dividend, add it to 8, then carry on: 87 / 80

Moving on to step 2:
The number 80 fits into 87 1 times, leaving a remainder of 7.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtract 80 from 87 to get 7.
Append the next digit (1) from the dividend to 7 and continue with: 71 / 80

Step 3:
The number 80 fits into 71 0 times, leaving a remainder of 71.
Put 0 as the next digit of the answer. 
Result so far: 10.0
Deduct 0 from 71 and we're left with 71.
Include the next digit (9) from the dividend after 71, then repeat: 719 / 80

Moving on to step 4:
719 divided by 80 is 8 with a remainder of 79.
Record the quotient 8 as the next digit in the result. 
Result so far: 108.0
Deduct 640 from 719 and we're left with 79.
Grab the next digit (1) from the dividend, add it to 79, then carry on: 791 / 80

Step 5:
80 goes into 791 9 times with a remainder of 71.
Record the quotient 9 as the next digit in the result. 
Result so far: 1089.0
The remainder is 71 after subtracting 720 from 791.
Grab the next digit (3) from the dividend, add it to 71, then carry on: 713 / 80

Advancing to step 6:
713 divided by 80 is 8 with a remainder of 73.
Write down 8 as next digit of the result. 
Result so far: 10898.0
Subtract 640 from 713 to get 73.
Since there are no more digits in the dividend, we add a zero to the remainder making it 730, and continue the process.

Step 7:
80 goes into 730 9 times with a remainder of 10.
The number 9 becomes the next digit in our result. 
Result so far: 10898.9
The remainder is 10 after subtracting 720 from 730.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 8:
If we divide 100 by 80, we get 1 and a remainder of 20.
The number 1 becomes the next digit in our result. 
Result so far: 10898.91
If we take 80 away from 100, we end up with 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:
80 can be fit into 200 2 times, resulting in a remainder of 40.
The number 2 becomes the next digit in our result. 
Result so far: 10898.912
Subtracting 160 from 200 leaves us with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Advancing to step 10:
When dividing 400 by 80, we get 5 with a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 10898.9125
Subtracting 400 from 400 leaves us 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:
If we divide 0 by 80, we get 0 and a remainder of 0.
The next digit of our result is 0. 
Result so far: 10898.9125
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 12:
0 divided by 80 is 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 10898.9125
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

After the division, we end up with 10898.9125 and a remainder of 0.0.