We look at the division of 90312897 by 991 
Our goal is to divide 90312897 by 991.

On to step 1:
991 goes into 9 0 times with a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 9, we get 9.
Append the next digit (0) from the dividend to 9 and continue with: 90 / 991

On to step 2:
If we divide 90 by 991, we get 0 and a remainder of 90.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 90, we get 90.
Grab the next digit (3) from the dividend, add it to 90, then carry on: 903 / 991

Step 3:
When dividing 903 by 991, we get 0 with a remainder of 903.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 903, we get 903.
Fetch the next digit (1) from the dividend, attach it to 903 and continue: 9031 / 991

Going ahead to step 4:
If we divide 9031 by 991, we get 9 and a remainder of 112.
Put 9 as the next digit of the answer. 
Result so far: 9.0
The remainder is 112 after subtracting 8919 from 9031.
Append the next digit (2) from the dividend to 112 and continue with: 1122 / 991

Advancing to step 5:
When dividing 1122 by 991, we get 1 with a remainder of 131.
Write down 1 as next digit of the result. 
Result so far: 91.0
Subtracting 991 from 1122 leaves us with 131.
Include the next digit (8) from the dividend after 131, then repeat: 1318 / 991

Going ahead to step 6:
991 goes into 1318 1 times with a remainder of 327.
Use 1 as the next digit of our solution. 
Result so far: 911.0
Subtracting 991 from 1318 leaves us with 327.
Append the next digit (9) from the dividend to 327 and continue with: 3279 / 991

Advancing to step 7:
The number 991 fits into 3279 3 times, leaving a remainder of 306.
Use 3 as the next digit of our solution. 
Result so far: 9113.0
If we subtract 2973 from 3279, we get 306.
Include the next digit (7) from the dividend after 306, then repeat: 3067 / 991

Going ahead to step 8:
3067 divided by 991 is 3 with a remainder of 94.
The number 3 becomes the next digit in our result. 
Result so far: 91133.0
Subtract 2973 from 3067 to get 94.
Since there are no more digits in the dividend, we add a zero to the remainder making it 940, and continue the process.

Advancing to step 9:
The number 991 fits into 940 0 times, leaving a remainder of 940.
The number 0 becomes the next digit in our result. 
Result so far: 91133.0
If we subtract 0 from 940, we get 940.
Since there are no more digits in the dividend, we add a zero to the remainder making it 9400, and continue the process.

Going ahead to step 10:
9400 divided by 991 is 9 with a remainder of 481.
Write down 9 as next digit of the result. 
Result so far: 91133.09
Subtracting 8919 from 9400 leaves us with 481.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4810, and continue the process.

On to step 11:
991 goes into 4810 4 times with a remainder of 846.
Put 4 as the next digit of the answer. 
Result so far: 91133.094
If we take 3964 away from 4810, we end up with 846.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8460, and continue the process.

Let's proceed to step 12:
991 goes into 8460 8 times with a remainder of 532.
Use 8 as the next digit of our solution. 
Result so far: 91133.0948
If we subtract 7928 from 8460, we get 532.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5320, and continue the process.

Going ahead to step 13:
991 can be fit into 5320 5 times, resulting in a remainder of 365.
Use 5 as the next digit of our solution. 
Result so far: 91133.09485
Subtracting 4955 from 5320 leaves us with 365.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3650, and continue the process.

Moving on to step 14:
The number 991 fits into 3650 3 times, leaving a remainder of 677.
Use 3 as the next digit of our solution. 
Result so far: 91133.094853
Deduct 2973 from 3650 and we're left with 677.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6770, and continue the process.

Advancing to step 15:
991 can be fit into 6770 6 times, resulting in a remainder of 824.
The number 6 becomes the next digit in our result. 
Result so far: 91133.0948536
Subtract 5946 from 6770 to get 824.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8240, and continue the process.

Moving on to step 16:
The number 991 fits into 8240 8 times, leaving a remainder of 312.
Put 8 as the next digit of the answer. 
Result so far: 91133.09485368
Subtract 7928 from 8240 to get 312.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3120, and continue the process.

The quotient of the division is 91133.09485368, and the remainder is 3.12e-07.