We divide 660691 by 77
We're looking to find how many times 77 goes into 660691.

Going ahead to step 1:
If we divide 6 by 77, we get 0 and a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Append the next digit (6) from the dividend to 6 and continue with: 66 / 77

Moving on to step 2:
When dividing 66 by 77, we get 0 with a remainder of 66.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 66 leaves us with 66.
Bring next digit (0) of the dividend behind the 66 and repeat the process: 660 / 77

On to step 3:
If we divide 660 by 77, we get 8 and a remainder of 44.
Write down 8 as next digit of the result. 
Result so far: 8.0
If we take 616 away from 660, we end up with 44.
Grab the next digit (6) from the dividend, add it to 44, then carry on: 446 / 77

Advancing to step 4:
The number 77 fits into 446 5 times, leaving a remainder of 61.
Record the quotient 5 as the next digit in the result. 
Result so far: 85.0
Deduct 385 from 446 and we're left with 61.
Fetch the next digit (9) from the dividend, attach it to 61 and continue: 619 / 77

On to step 5:
619 divided by 77 is 8 with a remainder of 3.
Record the quotient 8 as the next digit in the result. 
Result so far: 858.0
Subtract 616 from 619 to get 3.
Append the next digit (1) from the dividend to 3 and continue with: 31 / 77

Let's proceed to step 6:
77 goes into 31 0 times with a remainder of 31.
The next digit of our result is 0. 
Result so far: 8580.0
If we take 0 away from 31, we end up with 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Step 7:
77 can be fit into 310 4 times, resulting in a remainder of 2.
Put 4 as the next digit of the answer. 
Result so far: 8580.4
If we take 308 away from 310, we end up with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 8:
If we divide 20 by 77, we get 0 and a remainder of 20.
Write down 0 as next digit of the result. 
Result so far: 8580.4
Deduct 0 from 20 and we're left with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Let's proceed to step 9:
If we divide 200 by 77, we get 2 and a remainder of 46.
The next digit of our result is 2. 
Result so far: 8580.402
If we subtract 154 from 200, we get 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Let's proceed to step 10:
If we divide 460 by 77, we get 5 and a remainder of 75.
The number 5 becomes the next digit in our result. 
Result so far: 8580.4025
If we take 385 away from 460, we end up with 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Going ahead to step 11:
77 can be fit into 750 9 times, resulting in a remainder of 57.
The next digit of our result is 9. 
Result so far: 8580.40259
Subtract 693 from 750 to get 57.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

Let's proceed to step 12:
77 can be fit into 570 7 times, resulting in a remainder of 31.
Write down 7 as next digit of the result. 
Result so far: 8580.402597
Subtract 539 from 570 to get 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

On to step 13:
The number 77 fits into 310 4 times, leaving a remainder of 2.
The next digit of our result is 4. 
Result so far: 8580.4025974
The remainder is 2 after subtracting 308 from 310.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Going ahead to step 14:
20 divided by 77 is 0 with a remainder of 20.
Record the quotient 0 as the next digit in the result. 
Result so far: 8580.4025974
If we subtract 0 from 20, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

In conclusion, the division gives 8580.4025974 with a balance of 2e-08.