We divide 78639949 by 921
We want to divide 78639949 by 921.

Let's proceed to step 1:
921 can be fit into 7 0 times, resulting in a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Take the next digit (8) from the dividend and append it to 7, then repeat: 78 / 921

Moving on to step 2:
78 divided by 921 is 0 with a remainder of 78.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 78 and we're left with 78.
Take the next digit (6) from the dividend and append it to 78, then repeat: 786 / 921

Going ahead to step 3:
921 goes into 786 0 times with a remainder of 786.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 786 to get 786.
Grab the next digit (3) from the dividend, add it to 786, then carry on: 7863 / 921

On to step 4:
When dividing 7863 by 921, we get 8 with a remainder of 495.
Put 8 as the next digit of the answer. 
Result so far: 8.0
Subtracting 7368 from 7863 leaves us with 495.
Append the next digit (9) from the dividend to 495 and continue with: 4959 / 921

Step 5:
921 can be fit into 4959 5 times, resulting in a remainder of 354.
Record the quotient 5 as the next digit in the result. 
Result so far: 85.0
Subtract 4605 from 4959 to get 354.
Take the next digit (9) from the dividend and append it to 354, then repeat: 3549 / 921

Going ahead to step 6:
When dividing 3549 by 921, we get 3 with a remainder of 786.
Record the quotient 3 as the next digit in the result. 
Result so far: 853.0
Subtracting 2763 from 3549 leaves us with 786.
Fetch the next digit (4) from the dividend, attach it to 786 and continue: 7864 / 921

On to step 7:
7864 divided by 921 is 8 with a remainder of 496.
Write down 8 as next digit of the result. 
Result so far: 8538.0
If we take 7368 away from 7864, we end up with 496.
Append the next digit (9) from the dividend to 496 and continue with: 4969 / 921

Step 8:
When dividing 4969 by 921, we get 5 with a remainder of 364.
The number 5 becomes the next digit in our result. 
Result so far: 85385.0
If we take 4605 away from 4969, we end up with 364.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3640, and continue the process.

Step 9:
921 can be fit into 3640 3 times, resulting in a remainder of 877.
Put 3 as the next digit of the answer. 
Result so far: 85385.3
If we take 2763 away from 3640, we end up with 877.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8770, and continue the process.

Moving on to step 10:
The number 921 fits into 8770 9 times, leaving a remainder of 481.
Use 9 as the next digit of our solution. 
Result so far: 85385.39
Subtracting 8289 from 8770 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.

Moving on to step 11:
The number 921 fits into 4810 5 times, leaving a remainder of 205.
The number 5 becomes the next digit in our result. 
Result so far: 85385.395
Subtract 4605 from 4810 to get 205.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2050, and continue the process.

Step 12:
If we divide 2050 by 921, we get 2 and a remainder of 208.
Write down 2 as next digit of the result. 
Result so far: 85385.3952
The remainder is 208 after subtracting 1842 from 2050.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2080, and continue the process.

Let's proceed to step 13:
If we divide 2080 by 921, we get 2 and a remainder of 238.
The next digit of our result is 2. 
Result so far: 85385.39522
If we subtract 1842 from 2080, we get 238.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2380, and continue the process.

After the division, we end up with 85385.39522 and a remainder of 0.000238.