Let's divide 78748251 by 991
We want to figure out the number of times 78748251 can be divided by 991.

Let's proceed to step 1:
The number 991 fits into 7 0 times, leaving a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Grab the next digit (8) from the dividend, add it to 7, then carry on: 78 / 991

Advancing to step 2:
991 can be fit into 78 0 times, resulting in a remainder of 78.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 78 and we're left with 78.
Fetch the next digit (7) from the dividend, attach it to 78 and continue: 787 / 991

Let's proceed to step 3:
The number 991 fits into 787 0 times, leaving a remainder of 787.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 787 and we're left with 787.
Fetch the next digit (4) from the dividend, attach it to 787 and continue: 7874 / 991

Step 4:
If we divide 7874 by 991, we get 7 and a remainder of 937.
Write down 7 as next digit of the result. 
Result so far: 7.0
Subtracting 6937 from 7874 leaves us with 937.
Include the next digit (8) from the dividend after 937, then repeat: 9378 / 991

Advancing to step 5:
991 can be fit into 9378 9 times, resulting in a remainder of 459.
Use 9 as the next digit of our solution. 
Result so far: 79.0
Subtracting 8919 from 9378 leaves us with 459.
Fetch the next digit (2) from the dividend, attach it to 459 and continue: 4592 / 991

On to step 6:
991 goes into 4592 4 times with a remainder of 628.
Use 4 as the next digit of our solution. 
Result so far: 794.0
If we take 3964 away from 4592, we end up with 628.
Fetch the next digit (5) from the dividend, attach it to 628 and continue: 6285 / 991

Moving on to step 7:
6285 divided by 991 is 6 with a remainder of 339.
Use 6 as the next digit of our solution. 
Result so far: 7946.0
If we subtract 5946 from 6285, we get 339.
Include the next digit (1) from the dividend after 339, then repeat: 3391 / 991

Going ahead to step 8:
If we divide 3391 by 991, we get 3 and a remainder of 418.
Put 3 as the next digit of the answer. 
Result so far: 79463.0
If we subtract 2973 from 3391, we get 418.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4180, and continue the process.

Step 9:
991 can be fit into 4180 4 times, resulting in a remainder of 216.
Use 4 as the next digit of our solution. 
Result so far: 79463.4
Subtracting 3964 from 4180 leaves us with 216.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2160, and continue the process.

Moving on to step 10:
When dividing 2160 by 991, we get 2 with a remainder of 178.
Record the quotient 2 as the next digit in the result. 
Result so far: 79463.42
Deduct 1982 from 2160 and we're left with 178.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1780, and continue the process.

Moving on to step 11:
991 goes into 1780 1 times with a remainder of 789.
The next digit of our result is 1. 
Result so far: 79463.421
Deduct 991 from 1780 and we're left with 789.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7890, and continue the process.

On to step 12:
When dividing 7890 by 991, we get 7 with a remainder of 953.
Put 7 as the next digit of the answer. 
Result so far: 79463.4217
The remainder is 953 after subtracting 6937 from 7890.
Since there are no more digits in the dividend, we add a zero to the remainder making it 9530, and continue the process.

Moving on to step 13:
991 can be fit into 9530 9 times, resulting in a remainder of 611.
Record the quotient 9 as the next digit in the result. 
Result so far: 79463.42179
The remainder is 611 after subtracting 8919 from 9530.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6110, and continue the process.

Going ahead to step 14:
6110 divided by 991 is 6 with a remainder of 164.
The next digit of our result is 6. 
Result so far: 79463.421796
Subtract 5946 from 6110 to get 164.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1640, and continue the process.

Let's proceed to step 15:
If we divide 1640 by 991, we get 1 and a remainder of 649.
Use 1 as the next digit of our solution. 
Result so far: 79463.4217961
Deduct 991 from 1640 and we're left with 649.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6490, and continue the process.

Going ahead to step 16:
6490 divided by 991 is 6 with a remainder of 544.
Write down 6 as next digit of the result. 
Result so far: 79463.42179616
If we take 5946 away from 6490, we end up with 544.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5440, and continue the process.

After the division, we end up with 79463.42179616 and a remainder of 5.44e-07.