Let's divide 89712055 by 91
We want to figure out the number of times 89712055 can be divided by 91.

Advancing to step 1:
91 goes into 8 0 times with a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Take the next digit (9) from the dividend and append it to 8, then repeat: 89 / 91

Moving on to step 2:
When dividing 89 by 91, we get 0 with a remainder of 89.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 89, we get 89.
Take the next digit (7) from the dividend and append it to 89, then repeat: 897 / 91

Going ahead to step 3:
If we divide 897 by 91, we get 9 and a remainder of 78.
Use 9 as the next digit of our solution. 
Result so far: 9.0
If we take 819 away from 897, we end up with 78.
Grab the next digit (1) from the dividend, add it to 78, then carry on: 781 / 91

Step 4:
When dividing 781 by 91, we get 8 with a remainder of 53.
The number 8 becomes the next digit in our result. 
Result so far: 98.0
The remainder is 53 after subtracting 728 from 781.
Fetch the next digit (2) from the dividend, attach it to 53 and continue: 532 / 91

Moving on to step 5:
91 can be fit into 532 5 times, resulting in a remainder of 77.
The next digit of our result is 5. 
Result so far: 985.0
The remainder is 77 after subtracting 455 from 532.
Take the next digit (0) from the dividend and append it to 77, then repeat: 770 / 91

Let's proceed to step 6:
770 divided by 91 is 8 with a remainder of 42.
Record the quotient 8 as the next digit in the result. 
Result so far: 9858.0
Deduct 728 from 770 and we're left with 42.
Bring next digit (5) of the dividend behind the 42 and repeat the process: 425 / 91

Going ahead to step 7:
91 goes into 425 4 times with a remainder of 61.
The number 4 becomes the next digit in our result. 
Result so far: 98584.0
If we take 364 away from 425, we end up with 61.
Include the next digit (5) from the dividend after 61, then repeat: 615 / 91

Let's proceed to step 8:
When dividing 615 by 91, we get 6 with a remainder of 69.
Record the quotient 6 as the next digit in the result. 
Result so far: 985846.0
The remainder is 69 after subtracting 546 from 615.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

Advancing to step 9:
91 goes into 690 7 times with a remainder of 53.
Record the quotient 7 as the next digit in the result. 
Result so far: 985846.7
If we take 637 away from 690, we end up with 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

On to step 10:
The number 91 fits into 530 5 times, leaving a remainder of 75.
Use 5 as the next digit of our solution. 
Result so far: 985846.75
If we subtract 455 from 530, we get 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Going ahead to step 11:
The number 91 fits into 750 8 times, leaving a remainder of 22.
Record the quotient 8 as the next digit in the result. 
Result so far: 985846.758
Subtract 728 from 750 to get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Advancing to step 12:
220 divided by 91 is 2 with a remainder of 38.
Record the quotient 2 as the next digit in the result. 
Result so far: 985846.7582
If we take 182 away from 220, we end up with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

On to step 13:
380 divided by 91 is 4 with a remainder of 16.
Write down 4 as next digit of the result. 
Result so far: 985846.75824
Deduct 364 from 380 and we're left with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Going ahead to step 14:
When dividing 160 by 91, we get 1 with a remainder of 69.
Put 1 as the next digit of the answer. 
Result so far: 985846.758241
Subtract 91 from 160 to get 69.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

Step 15:
91 can be fit into 690 7 times, resulting in a remainder of 53.
Write down 7 as next digit of the result. 
Result so far: 985846.7582417
If we take 637 away from 690, we end up with 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Step 16:
91 goes into 530 5 times with a remainder of 75.
Put 5 as the next digit of the answer. 
Result so far: 985846.75824175
Subtract 455 from 530 to get 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

After the division, we end up with 985846.75824175 and a remainder of 7.5e-08.