We divide 864646 by 77
Our goal is to divide 864646 by 77.

Advancing to step 1:
8 divided by 77 is 0 with a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Take the next digit (6) from the dividend and append it to 8, then repeat: 86 / 77

Step 2:
The number 77 fits into 86 1 times, leaving a remainder of 9.
Put 1 as the next digit of the answer. 
Result so far: 1.0
The remainder is 9 after subtracting 77 from 86.
Bring next digit (4) of the dividend behind the 9 and repeat the process: 94 / 77

Advancing to step 3:
The number 77 fits into 94 1 times, leaving a remainder of 17.
The next digit of our result is 1. 
Result so far: 11.0
If we subtract 77 from 94, we get 17.
Fetch the next digit (6) from the dividend, attach it to 17 and continue: 176 / 77

On to step 4:
If we divide 176 by 77, we get 2 and a remainder of 22.
Write down 2 as next digit of the result. 
Result so far: 112.0
Subtract 154 from 176 to get 22.
Grab the next digit (4) from the dividend, add it to 22, then carry on: 224 / 77

Advancing to step 5:
224 divided by 77 is 2 with a remainder of 70.
Use 2 as the next digit of our solution. 
Result so far: 1122.0
Deduct 154 from 224 and we're left with 70.
Bring next digit (6) of the dividend behind the 70 and repeat the process: 706 / 77

Moving on to step 6:
If we divide 706 by 77, we get 9 and a remainder of 13.
Write down 9 as next digit of the result. 
Result so far: 11229.0
If we subtract 693 from 706, we get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Advancing to step 7:
If we divide 130 by 77, we get 1 and a remainder of 53.
Write down 1 as next digit of the result. 
Result so far: 11229.1
The remainder is 53 after subtracting 77 from 130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Advancing to step 8:
77 goes into 530 6 times with a remainder of 68.
The next digit of our result is 6. 
Result so far: 11229.16
Subtracting 462 from 530 leaves us with 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

On to step 9:
680 divided by 77 is 8 with a remainder of 64.
The number 8 becomes the next digit in our result. 
Result so far: 11229.168
If we subtract 616 from 680, we get 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Going ahead to step 10:
The number 77 fits into 640 8 times, leaving a remainder of 24.
Write down 8 as next digit of the result. 
Result so far: 11229.1688
If we subtract 616 from 640, we get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

The final result is 11229.1688 with a remainder of 0.00024.