Let's divide 21531942 by 991
Our goal is to divide 21531942 by 991.

Advancing to step 1:
The number 991 fits into 2 0 times, leaving a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Include the next digit (1) from the dividend after 2, then repeat: 21 / 991

Advancing to step 2:
991 can be fit into 21 0 times, resulting in a remainder of 21.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 21 leaves us with 21.
Include the next digit (5) from the dividend after 21, then repeat: 215 / 991

Step 3:
215 divided by 991 is 0 with a remainder of 215.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 215 after subtracting 0 from 215.
Append the next digit (3) from the dividend to 215 and continue with: 2153 / 991

On to step 4:
2153 divided by 991 is 2 with a remainder of 171.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
Deduct 1982 from 2153 and we're left with 171.
Append the next digit (1) from the dividend to 171 and continue with: 1711 / 991

Going ahead to step 5:
The number 991 fits into 1711 1 times, leaving a remainder of 720.
Put 1 as the next digit of the answer. 
Result so far: 21.0
Deduct 991 from 1711 and we're left with 720.
Fetch the next digit (9) from the dividend, attach it to 720 and continue: 7209 / 991

Moving on to step 6:
7209 divided by 991 is 7 with a remainder of 272.
Use 7 as the next digit of our solution. 
Result so far: 217.0
Subtract 6937 from 7209 to get 272.
Fetch the next digit (4) from the dividend, attach it to 272 and continue: 2724 / 991

Going ahead to step 7:
991 can be fit into 2724 2 times, resulting in a remainder of 742.
Put 2 as the next digit of the answer. 
Result so far: 2172.0
Subtracting 1982 from 2724 leaves us with 742.
Append the next digit (2) from the dividend to 742 and continue with: 7422 / 991

Moving on to step 8:
The number 991 fits into 7422 7 times, leaving a remainder of 485.
The next digit of our result is 7. 
Result so far: 21727.0
If we take 6937 away from 7422, we end up with 485.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4850, and continue the process.

On to step 9:
When dividing 4850 by 991, we get 4 with a remainder of 886.
The next digit of our result is 4. 
Result so far: 21727.4
Subtracting 3964 from 4850 leaves us with 886.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8860, and continue the process.

On to step 10:
991 can be fit into 8860 8 times, resulting in a remainder of 932.
The next digit of our result is 8. 
Result so far: 21727.48
Subtract 7928 from 8860 to get 932.
Since there are no more digits in the dividend, we add a zero to the remainder making it 9320, and continue the process.

Moving on to step 11:
991 can be fit into 9320 9 times, resulting in a remainder of 401.
Use 9 as the next digit of our solution. 
Result so far: 21727.489
Deduct 8919 from 9320 and we're left with 401.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4010, and continue the process.

Let's proceed to step 12:
991 goes into 4010 4 times with a remainder of 46.
Put 4 as the next digit of the answer. 
Result so far: 21727.4894
Subtract 3964 from 4010 to get 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

On to step 13:
When dividing 460 by 991, we get 0 with a remainder of 460.
Put 0 as the next digit of the answer. 
Result so far: 21727.4894
Subtracting 0 from 460 leaves us with 460.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4600, and continue the process.

Step 14:
If we divide 4600 by 991, we get 4 and a remainder of 636.
The next digit of our result is 4. 
Result so far: 21727.489404
If we subtract 3964 from 4600, we get 636.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6360, and continue the process.

Advancing to step 15:
When dividing 6360 by 991, we get 6 with a remainder of 414.
The number 6 becomes the next digit in our result. 
Result so far: 21727.4894046
If we take 5946 away from 6360, we end up with 414.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4140, and continue the process.

Advancing to step 16:
When dividing 4140 by 991, we get 4 with a remainder of 176.
Record the quotient 4 as the next digit in the result. 
Result so far: 21727.48940464
Deduct 3964 from 4140 and we're left with 176.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1760, and continue the process.

Our division results in 21727.48940464 with a remaining 1.76e-07.