We look at the division of 663531 by 77 
Let's see how many times 77 fits into 663531.

Advancing to step 1:
When dividing 6 by 77, we get 0 with a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Grab the next digit (6) from the dividend, add it to 6, then carry on: 66 / 77

Going ahead to step 2:
If we divide 66 by 77, we get 0 and a remainder of 66.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 66 to get 66.
Fetch the next digit (3) from the dividend, attach it to 66 and continue: 663 / 77

Step 3:
The number 77 fits into 663 8 times, leaving a remainder of 47.
Put 8 as the next digit of the answer. 
Result so far: 8.0
The remainder is 47 after subtracting 616 from 663.
Grab the next digit (5) from the dividend, add it to 47, then carry on: 475 / 77

Going ahead to step 4:
If we divide 475 by 77, we get 6 and a remainder of 13.
Record the quotient 6 as the next digit in the result. 
Result so far: 86.0
Deduct 462 from 475 and we're left with 13.
Include the next digit (3) from the dividend after 13, then repeat: 133 / 77

Step 5:
If we divide 133 by 77, we get 1 and a remainder of 56.
Write down 1 as next digit of the result. 
Result so far: 861.0
Subtract 77 from 133 to get 56.
Grab the next digit (1) from the dividend, add it to 56, then carry on: 561 / 77

Advancing to step 6:
77 can be fit into 561 7 times, resulting in a remainder of 22.
Record the quotient 7 as the next digit in the result. 
Result so far: 8617.0
If we subtract 539 from 561, we get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Let's proceed to step 7:
220 divided by 77 is 2 with a remainder of 66.
Put 2 as the next digit of the answer. 
Result so far: 8617.2
If we subtract 154 from 220, we get 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Going ahead to step 8:
660 divided by 77 is 8 with a remainder of 44.
Use 8 as the next digit of our solution. 
Result so far: 8617.28
Subtracting 616 from 660 leaves us with 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Moving on to step 9:
The number 77 fits into 440 5 times, leaving a remainder of 55.
Put 5 as the next digit of the answer. 
Result so far: 8617.285
Deduct 385 from 440 and we're left with 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

Going ahead to step 10:
77 goes into 550 7 times with a remainder of 11.
Put 7 as the next digit of the answer. 
Result so far: 8617.2857
If we take 539 away from 550, we end up with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Let's proceed to step 11:
The number 77 fits into 110 1 times, leaving a remainder of 33.
Put 1 as the next digit of the answer. 
Result so far: 8617.28571
Deduct 77 from 110 and we're left with 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Moving on to step 12:
77 can be fit into 330 4 times, resulting in a remainder of 22.
Record the quotient 4 as the next digit in the result. 
Result so far: 8617.285714
Subtracting 308 from 330 leaves us with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Going ahead to step 13:
220 divided by 77 is 2 with a remainder of 66.
Write down 2 as next digit of the result. 
Result so far: 8617.2857142
The remainder is 66 after subtracting 154 from 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

On to step 14:
If we divide 660 by 77, we get 8 and a remainder of 44.
The next digit of our result is 8. 
Result so far: 8617.28571428
The remainder is 44 after subtracting 616 from 660.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Our division results in 8617.28571428 with a remaining 4.4e-08.