We look at the division of 646531 by 77 
We want to figure out the number of times 646531 can be divided by 77.

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
Subtracting 0 from 6 leaves us with 6.
Bring next digit (4) of the dividend behind the 6 and repeat the process: 64 / 77

Going ahead to step 2:
77 can be fit into 64 0 times, resulting in a remainder of 64.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 64 to get 64.
Fetch the next digit (6) from the dividend, attach it to 64 and continue: 646 / 77

Moving on to step 3:
The number 77 fits into 646 8 times, leaving a remainder of 30.
The next digit of our result is 8. 
Result so far: 8.0
Subtracting 616 from 646 leaves us with 30.
Fetch the next digit (5) from the dividend, attach it to 30 and continue: 305 / 77

Moving on to step 4:
305 divided by 77 is 3 with a remainder of 74.
The number 3 becomes the next digit in our result. 
Result so far: 83.0
The remainder is 74 after subtracting 231 from 305.
Append the next digit (3) from the dividend to 74 and continue with: 743 / 77

Moving on to step 5:
77 goes into 743 9 times with a remainder of 50.
Write down 9 as next digit of the result. 
Result so far: 839.0
The remainder is 50 after subtracting 693 from 743.
Bring next digit (1) of the dividend behind the 50 and repeat the process: 501 / 77

Let's proceed to step 6:
77 goes into 501 6 times with a remainder of 39.
Put 6 as the next digit of the answer. 
Result so far: 8396.0
The remainder is 39 after subtracting 462 from 501.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Advancing to step 7:
390 divided by 77 is 5 with a remainder of 5.
Record the quotient 5 as the next digit in the result. 
Result so far: 8396.5
If we take 385 away from 390, we end up with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Step 8:
The number 77 fits into 50 0 times, leaving a remainder of 50.
The number 0 becomes the next digit in our result. 
Result so far: 8396.5
Subtract 0 from 50 to get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Advancing to step 9:
If we divide 500 by 77, we get 6 and a remainder of 38.
The next digit of our result is 6. 
Result so far: 8396.506
If we take 462 away from 500, we end up with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

On to step 10:
The number 77 fits into 380 4 times, leaving a remainder of 72.
Use 4 as the next digit of our solution. 
Result so far: 8396.5064
Subtracting 308 from 380 leaves us with 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Step 11:
77 goes into 720 9 times with a remainder of 27.
The next digit of our result is 9. 
Result so far: 8396.50649
Deduct 693 from 720 and we're left with 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Moving on to step 12:
If we divide 270 by 77, we get 3 and a remainder of 39.
Put 3 as the next digit of the answer. 
Result so far: 8396.506493
If we take 231 away from 270, we end up with 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Advancing to step 13:
If we divide 390 by 77, we get 5 and a remainder of 5.
Put 5 as the next digit of the answer. 
Result so far: 8396.5064935
Subtract 385 from 390 to get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Let's proceed to step 14:
77 goes into 50 0 times with a remainder of 50.
The next digit of our result is 0. 
Result so far: 8396.5064935
The remainder is 50 after subtracting 0 from 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

The quotient of the division is 8396.5064935, and the remainder is 5e-08.