Let's divide 638372 by 77
We want to figure out the number of times 638372 can be divided by 77.

Going ahead to step 1:
77 goes into 6 0 times with a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Take the next digit (3) from the dividend and append it to 6, then repeat: 63 / 77

Moving on to step 2:
77 can be fit into 63 0 times, resulting in a remainder of 63.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 63 and we're left with 63.
Append the next digit (8) from the dividend to 63 and continue with: 638 / 77

Let's proceed to step 3:
77 goes into 638 8 times with a remainder of 22.
Use 8 as the next digit of our solution. 
Result so far: 8.0
Subtracting 616 from 638 leaves us with 22.
Grab the next digit (3) from the dividend, add it to 22, then carry on: 223 / 77

Going ahead to step 4:
If we divide 223 by 77, we get 2 and a remainder of 69.
The number 2 becomes the next digit in our result. 
Result so far: 82.0
Deduct 154 from 223 and we're left with 69.
Fetch the next digit (7) from the dividend, attach it to 69 and continue: 697 / 77

Step 5:
If we divide 697 by 77, we get 9 and a remainder of 4.
The number 9 becomes the next digit in our result. 
Result so far: 829.0
If we take 693 away from 697, we end up with 4.
Append the next digit (2) from the dividend to 4 and continue with: 42 / 77

Let's proceed to step 6:
42 divided by 77 is 0 with a remainder of 42.
Write down 0 as next digit of the result. 
Result so far: 8290.0
If we take 0 away from 42, we end up with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

On to step 7:
The number 77 fits into 420 5 times, leaving a remainder of 35.
Put 5 as the next digit of the answer. 
Result so far: 8290.5
If we subtract 385 from 420, we get 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

On to step 8:
If we divide 350 by 77, we get 4 and a remainder of 42.
Write down 4 as next digit of the result. 
Result so far: 8290.54
If we subtract 308 from 350, we get 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Moving on to step 9:
The number 77 fits into 420 5 times, leaving a remainder of 35.
The next digit of our result is 5. 
Result so far: 8290.545
Subtracting 385 from 420 leaves us with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Step 10:
77 goes into 350 4 times with a remainder of 42.
Use 4 as the next digit of our solution. 
Result so far: 8290.5454
If we take 308 away from 350, we end up with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Moving on to step 11:
The number 77 fits into 420 5 times, leaving a remainder of 35.
Use 5 as the next digit of our solution. 
Result so far: 8290.54545
If we subtract 385 from 420, we get 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Step 12:
77 can be fit into 350 4 times, resulting in a remainder of 42.
The next digit of our result is 4. 
Result so far: 8290.545454
Subtract 308 from 350 to get 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Moving on to step 13:
420 divided by 77 is 5 with a remainder of 35.
Write down 5 as next digit of the result. 
Result so far: 8290.5454545
The remainder is 35 after subtracting 385 from 420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Going ahead to step 14:
The number 77 fits into 350 4 times, leaving a remainder of 42.
The next digit of our result is 4. 
Result so far: 8290.54545454
Subtract 308 from 350 to get 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Our division results in 8290.54545454 with a remaining 4.2e-08.