We're dividing 870515 by 81 
We want to figure out the number of times 870515 can be divided by 81.

Moving on to step 1:
81 can be fit into 8 0 times, resulting in a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Take the next digit (7) from the dividend and append it to 8, then repeat: 87 / 81

Going ahead to step 2:
If we divide 87 by 81, we get 1 and a remainder of 6.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Deduct 81 from 87 and we're left with 6.
Grab the next digit (0) from the dividend, add it to 6, then carry on: 60 / 81

Let's proceed to step 3:
When dividing 60 by 81, we get 0 with a remainder of 60.
The number 0 becomes the next digit in our result. 
Result so far: 10.0
If we subtract 0 from 60, we get 60.
Take the next digit (5) from the dividend and append it to 60, then repeat: 605 / 81

Let's proceed to step 4:
If we divide 605 by 81, we get 7 and a remainder of 38.
Write down 7 as next digit of the result. 
Result so far: 107.0
If we subtract 567 from 605, we get 38.
Include the next digit (1) from the dividend after 38, then repeat: 381 / 81

On to step 5:
381 divided by 81 is 4 with a remainder of 57.
Write down 4 as next digit of the result. 
Result so far: 1074.0
If we subtract 324 from 381, we get 57.
Include the next digit (5) from the dividend after 57, then repeat: 575 / 81

On to step 6:
If we divide 575 by 81, we get 7 and a remainder of 8.
Put 7 as the next digit of the answer. 
Result so far: 10747.0
Subtracting 567 from 575 leaves us with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Going ahead to step 7:
When dividing 80 by 81, we get 0 with a remainder of 80.
Put 0 as the next digit of the answer. 
Result so far: 10747.0
If we take 0 away from 80, we end up with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Going ahead to step 8:
800 divided by 81 is 9 with a remainder of 71.
Record the quotient 9 as the next digit in the result. 
Result so far: 10747.09
Deduct 729 from 800 and we're left with 71.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

Going ahead to step 9:
81 goes into 710 8 times with a remainder of 62.
The next digit of our result is 8. 
Result so far: 10747.098
Subtracting 648 from 710 leaves us with 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Step 10:
The number 81 fits into 620 7 times, leaving a remainder of 53.
Put 7 as the next digit of the answer. 
Result so far: 10747.0987
Subtract 567 from 620 to get 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Advancing to step 11:
530 divided by 81 is 6 with a remainder of 44.
Write down 6 as next digit of the result. 
Result so far: 10747.09876
If we take 486 away from 530, we end up with 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Advancing to step 12:
When dividing 440 by 81, we get 5 with a remainder of 35.
Put 5 as the next digit of the answer. 
Result so far: 10747.098765
Subtract 405 from 440 to get 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Going ahead to step 13:
81 goes into 350 4 times with a remainder of 26.
Put 4 as the next digit of the answer. 
Result so far: 10747.0987654
If we take 324 away from 350, we end up with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Advancing to step 14:
If we divide 260 by 81, we get 3 and a remainder of 17.
The number 3 becomes the next digit in our result. 
Result so far: 10747.09876543
The remainder is 17 after subtracting 243 from 260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

The final result is 10747.09876543 with a remainder of 1.7e-08.