Let's divide 19806385 by 991
Our goal is to divide 19806385 by 991.

Advancing to step 1:
The number 991 fits into 1 0 times, leaving a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Fetch the next digit (9) from the dividend, attach it to 1 and continue: 19 / 991

Going ahead to step 2:
If we divide 19 by 991, we get 0 and a remainder of 19.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 19 and we're left with 19.
Take the next digit (8) from the dividend and append it to 19, then repeat: 198 / 991

Step 3:
When dividing 198 by 991, we get 0 with a remainder of 198.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 198 to get 198.
Take the next digit (0) from the dividend and append it to 198, then repeat: 1980 / 991

Step 4:
1980 divided by 991 is 1 with a remainder of 989.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we take 991 away from 1980, we end up with 989.
Append the next digit (6) from the dividend to 989 and continue with: 9896 / 991

Step 5:
991 goes into 9896 9 times with a remainder of 977.
The next digit of our result is 9. 
Result so far: 19.0
The remainder is 977 after subtracting 8919 from 9896.
Bring next digit (3) of the dividend behind the 977 and repeat the process: 9773 / 991

On to step 6:
991 goes into 9773 9 times with a remainder of 854.
Put 9 as the next digit of the answer. 
Result so far: 199.0
The remainder is 854 after subtracting 8919 from 9773.
Include the next digit (8) from the dividend after 854, then repeat: 8548 / 991

Going ahead to step 7:
991 can be fit into 8548 8 times, resulting in a remainder of 620.
The number 8 becomes the next digit in our result. 
Result so far: 1998.0
The remainder is 620 after subtracting 7928 from 8548.
Bring next digit (5) of the dividend behind the 620 and repeat the process: 6205 / 991

Going ahead to step 8:
6205 divided by 991 is 6 with a remainder of 259.
Record the quotient 6 as the next digit in the result. 
Result so far: 19986.0
If we take 5946 away from 6205, we end up with 259.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2590, and continue the process.

On to step 9:
991 goes into 2590 2 times with a remainder of 608.
Record the quotient 2 as the next digit in the result. 
Result so far: 19986.2
If we subtract 1982 from 2590, we get 608.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6080, and continue the process.

Going ahead to step 10:
6080 divided by 991 is 6 with a remainder of 134.
Put 6 as the next digit of the answer. 
Result so far: 19986.26
If we subtract 5946 from 6080, we get 134.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1340, and continue the process.

Let's proceed to step 11:
991 can be fit into 1340 1 times, resulting in a remainder of 349.
The next digit of our result is 1. 
Result so far: 19986.261
Subtract 991 from 1340 to get 349.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3490, and continue the process.

Going ahead to step 12:
991 can be fit into 3490 3 times, resulting in a remainder of 517.
The next digit of our result is 3. 
Result so far: 19986.2613
If we take 2973 away from 3490, we end up with 517.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5170, and continue the process.

Going ahead to step 13:
When dividing 5170 by 991, we get 5 with a remainder of 215.
Put 5 as the next digit of the answer. 
Result so far: 19986.26135
If we take 4955 away from 5170, we end up with 215.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2150, and continue the process.

Let's proceed to step 14:
991 can be fit into 2150 2 times, resulting in a remainder of 168.
Write down 2 as next digit of the result. 
Result so far: 19986.261352
Subtracting 1982 from 2150 leaves us with 168.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1680, and continue the process.

Advancing to step 15:
The number 991 fits into 1680 1 times, leaving a remainder of 689.
Put 1 as the next digit of the answer. 
Result so far: 19986.2613521
Deduct 991 from 1680 and we're left with 689.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6890, and continue the process.

Moving on to step 16:
The number 991 fits into 6890 6 times, leaving a remainder of 944.
Use 6 as the next digit of our solution. 
Result so far: 19986.26135216
The remainder is 944 after subtracting 5946 from 6890.
Since there are no more digits in the dividend, we add a zero to the remainder making it 9440, and continue the process.

The final result is 19986.26135216 with a remainder of 9.44e-07.