83363551 ÷ 991 
Our goal is to divide 83363551 by 991.

Step 1:
If we divide 8 by 991, we get 0 and a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Fetch the next digit (3) from the dividend, attach it to 8 and continue: 83 / 991

Moving on to step 2:
The number 991 fits into 83 0 times, leaving a remainder of 83.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 83, we get 83.
Bring next digit (3) of the dividend behind the 83 and repeat the process: 833 / 991

On to step 3:
If we divide 833 by 991, we get 0 and a remainder of 833.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 833, we get 833.
Fetch the next digit (6) from the dividend, attach it to 833 and continue: 8336 / 991

Moving on to step 4:
8336 divided by 991 is 8 with a remainder of 408.
Put 8 as the next digit of the answer. 
Result so far: 8.0
If we take 7928 away from 8336, we end up with 408.
Take the next digit (3) from the dividend and append it to 408, then repeat: 4083 / 991

Moving on to step 5:
If we divide 4083 by 991, we get 4 and a remainder of 119.
The next digit of our result is 4. 
Result so far: 84.0
The remainder is 119 after subtracting 3964 from 4083.
Fetch the next digit (5) from the dividend, attach it to 119 and continue: 1195 / 991

Moving on to step 6:
When dividing 1195 by 991, we get 1 with a remainder of 204.
The next digit of our result is 1. 
Result so far: 841.0
Subtracting 991 from 1195 leaves us with 204.
Include the next digit (5) from the dividend after 204, then repeat: 2045 / 991

Moving on to step 7:
The number 991 fits into 2045 2 times, leaving a remainder of 63.
The number 2 becomes the next digit in our result. 
Result so far: 8412.0
Deduct 1982 from 2045 and we're left with 63.
Include the next digit (1) from the dividend after 63, then repeat: 631 / 991

Let's proceed to step 8:
If we divide 631 by 991, we get 0 and a remainder of 631.
The next digit of our result is 0. 
Result so far: 84120.0
If we take 0 away from 631, we end up with 631.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6310, and continue the process.

Going ahead to step 9:
6310 divided by 991 is 6 with a remainder of 364.
Write down 6 as next digit of the result. 
Result so far: 84120.6
The remainder is 364 after subtracting 5946 from 6310.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3640, and continue the process.

Going ahead to step 10:
If we divide 3640 by 991, we get 3 and a remainder of 667.
Use 3 as the next digit of our solution. 
Result so far: 84120.63
Subtract 2973 from 3640 to get 667.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6670, and continue the process.

Let's proceed to step 11:
991 goes into 6670 6 times with a remainder of 724.
The number 6 becomes the next digit in our result. 
Result so far: 84120.636
If we subtract 5946 from 6670, we get 724.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7240, and continue the process.

Advancing to step 12:
The number 991 fits into 7240 7 times, leaving a remainder of 303.
The number 7 becomes the next digit in our result. 
Result so far: 84120.6367
Deduct 6937 from 7240 and we're left with 303.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3030, and continue the process.

Moving on to step 13:
991 can be fit into 3030 3 times, resulting in a remainder of 57.
Record the quotient 3 as the next digit in the result. 
Result so far: 84120.63673
If we subtract 2973 from 3030, we get 57.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

On to step 14:
991 goes into 570 0 times with a remainder of 570.
Write down 0 as next digit of the result. 
Result so far: 84120.63673
If we take 0 away from 570, we end up with 570.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5700, and continue the process.

Advancing to step 15:
991 goes into 5700 5 times with a remainder of 745.
Use 5 as the next digit of our solution. 
Result so far: 84120.6367305
Subtract 4955 from 5700 to get 745.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7450, and continue the process.

Moving on to step 16:
The number 991 fits into 7450 7 times, leaving a remainder of 513.
Write down 7 as next digit of the result. 
Result so far: 84120.63673057
If we subtract 6937 from 7450, we get 513.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5130, and continue the process.

After the division, we end up with 84120.63673057 and a remainder of 5.13e-07.