Let's divide 663891 by 77
We want to divide 663891 by 77.

Moving on to step 1:
6 divided by 77 is 0 with a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Include the next digit (6) from the dividend after 6, then repeat: 66 / 77

Going ahead to step 2:
66 divided by 77 is 0 with a remainder of 66.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 66 and we're left with 66.
Fetch the next digit (3) from the dividend, attach it to 66 and continue: 663 / 77

Moving on to step 3:
663 divided by 77 is 8 with a remainder of 47.
Put 8 as the next digit of the answer. 
Result so far: 8.0
Subtract 616 from 663 to get 47.
Fetch the next digit (8) from the dividend, attach it to 47 and continue: 478 / 77

Moving on to step 4:
The number 77 fits into 478 6 times, leaving a remainder of 16.
Write down 6 as next digit of the result. 
Result so far: 86.0
The remainder is 16 after subtracting 462 from 478.
Append the next digit (9) from the dividend to 16 and continue with: 169 / 77

Going ahead to step 5:
The number 77 fits into 169 2 times, leaving a remainder of 15.
Use 2 as the next digit of our solution. 
Result so far: 862.0
Deduct 154 from 169 and we're left with 15.
Bring next digit (1) of the dividend behind the 15 and repeat the process: 151 / 77

On to step 6:
77 goes into 151 1 times with a remainder of 74.
Record the quotient 1 as the next digit in the result. 
Result so far: 8621.0
Deduct 77 from 151 and we're left with 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

On to step 7:
77 goes into 740 9 times with a remainder of 47.
Put 9 as the next digit of the answer. 
Result so far: 8621.9
Subtract 693 from 740 to get 47.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

Step 8:
If we divide 470 by 77, we get 6 and a remainder of 8.
Put 6 as the next digit of the answer. 
Result so far: 8621.96
If we subtract 462 from 470, we get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Moving on to step 9:
80 divided by 77 is 1 with a remainder of 3.
The next digit of our result is 1. 
Result so far: 8621.961
Subtract 77 from 80 to get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Advancing to step 10:
If we divide 30 by 77, we get 0 and a remainder of 30.
Record the quotient 0 as the next digit in the result. 
Result so far: 8621.961
Subtracting 0 from 30 leaves us with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Going ahead to step 11:
When dividing 300 by 77, we get 3 with a remainder of 69.
Put 3 as the next digit of the answer. 
Result so far: 8621.96103
Subtracting 231 from 300 leaves us with 69.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

Going ahead to step 12:
The number 77 fits into 690 8 times, leaving a remainder of 74.
Put 8 as the next digit of the answer. 
Result so far: 8621.961038
If we take 616 away from 690, we end up with 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

Let's proceed to step 13:
77 goes into 740 9 times with a remainder of 47.
The number 9 becomes the next digit in our result. 
Result so far: 8621.9610389
The remainder is 47 after subtracting 693 from 740.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

On to step 14:
If we divide 470 by 77, we get 6 and a remainder of 8.
The number 6 becomes the next digit in our result. 
Result so far: 8621.96103896
The remainder is 8 after subtracting 462 from 470.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

The quotient of the division is 8621.96103896, and the remainder is 8e-09.