Let's divide 86621736 by 891
We're looking to find how many times 891 goes into 86621736.

Going ahead to step 1:
891 can be fit into 8 0 times, resulting in 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.
Append the next digit (6) from the dividend to 8 and continue with: 86 / 891

Advancing to step 2:
The number 891 fits into 86 0 times, leaving a remainder of 86.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 86 to get 86.
Include the next digit (6) from the dividend after 86, then repeat: 866 / 891

Advancing to step 3:
891 goes into 866 0 times with a remainder of 866.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 866 and we're left with 866.
Grab the next digit (2) from the dividend, add it to 866, then carry on: 8662 / 891

Advancing to step 4:
8662 divided by 891 is 9 with a remainder of 643.
Put 9 as the next digit of the answer. 
Result so far: 9.0
If we subtract 8019 from 8662, we get 643.
Append the next digit (1) from the dividend to 643 and continue with: 6431 / 891

Advancing to step 5:
891 can be fit into 6431 7 times, resulting in a remainder of 194.
Put 7 as the next digit of the answer. 
Result so far: 97.0
Subtract 6237 from 6431 to get 194.
Append the next digit (7) from the dividend to 194 and continue with: 1947 / 891

On to step 6:
When dividing 1947 by 891, we get 2 with a remainder of 165.
The number 2 becomes the next digit in our result. 
Result so far: 972.0
Subtracting 1782 from 1947 leaves us with 165.
Bring next digit (3) of the dividend behind the 165 and repeat the process: 1653 / 891

On to step 7:
891 can be fit into 1653 1 times, resulting in a remainder of 762.
Put 1 as the next digit of the answer. 
Result so far: 9721.0
If we subtract 891 from 1653, we get 762.
Append the next digit (6) from the dividend to 762 and continue with: 7626 / 891

Going ahead to step 8:
If we divide 7626 by 891, we get 8 and a remainder of 498.
The next digit of our result is 8. 
Result so far: 97218.0
Deduct 7128 from 7626 and we're left with 498.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4980, and continue the process.

Step 9:
When dividing 4980 by 891, we get 5 with a remainder of 525.
The number 5 becomes the next digit in our result. 
Result so far: 97218.5
The remainder is 525 after subtracting 4455 from 4980.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5250, and continue the process.

Let's proceed to step 10:
When dividing 5250 by 891, we get 5 with a remainder of 795.
Write down 5 as next digit of the result. 
Result so far: 97218.55
Deduct 4455 from 5250 and we're left with 795.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7950, and continue the process.

In conclusion, the division gives 97218.55 with a balance of 0.795.