Let's divide 64203771 by 864
Our goal is to divide 64203771 by 864.

On to step 1:
864 goes into 6 0 times with a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Grab the next digit (4) from the dividend, add it to 6, then carry on: 64 / 864

Advancing to step 2:
864 can be fit into 64 0 times, resulting in a remainder of 64.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 64 leaves us with 64.
Append the next digit (2) from the dividend to 64 and continue with: 642 / 864

On to step 3:
864 goes into 642 0 times with a remainder of 642.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 642, we get 642.
Append the next digit (0) from the dividend to 642 and continue with: 6420 / 864

Step 4:
If we divide 6420 by 864, we get 7 and a remainder of 372.
Record the quotient 7 as the next digit in the result. 
Result so far: 7.0
Subtract 6048 from 6420 to get 372.
Take the next digit (3) from the dividend and append it to 372, then repeat: 3723 / 864

Going ahead to step 5:
The number 864 fits into 3723 4 times, leaving a remainder of 267.
The number 4 becomes the next digit in our result. 
Result so far: 74.0
Subtracting 3456 from 3723 leaves us with 267.
Fetch the next digit (7) from the dividend, attach it to 267 and continue: 2677 / 864

On to step 6:
2677 divided by 864 is 3 with a remainder of 85.
The next digit of our result is 3. 
Result so far: 743.0
Subtract 2592 from 2677 to get 85.
Bring next digit (7) of the dividend behind the 85 and repeat the process: 857 / 864

Advancing to step 7:
The number 864 fits into 857 0 times, leaving a remainder of 857.
The number 0 becomes the next digit in our result. 
Result so far: 7430.0
Subtracting 0 from 857 leaves us with 857.
Include the next digit (1) from the dividend after 857, then repeat: 8571 / 864

On to step 8:
If we divide 8571 by 864, we get 9 and a remainder of 795.
The next digit of our result is 9. 
Result so far: 74309.0
Subtracting 7776 from 8571 leaves us with 795.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7950, and continue the process.

Going ahead to step 9:
7950 divided by 864 is 9 with a remainder of 174.
Record the quotient 9 as the next digit in the result. 
Result so far: 74309.9
Deduct 7776 from 7950 and we're left with 174.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1740, and continue the process.

Let's proceed to step 10:
The number 864 fits into 1740 2 times, leaving a remainder of 12.
Use 2 as the next digit of our solution. 
Result so far: 74309.92
If we take 1728 away from 1740, we end up with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Step 11:
120 divided by 864 is 0 with a remainder of 120.
Put 0 as the next digit of the answer. 
Result so far: 74309.92
Subtracting 0 from 120 leaves us with 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

On to step 12:
When dividing 1200 by 864, we get 1 with a remainder of 336.
Put 1 as the next digit of the answer. 
Result so far: 74309.9201
The remainder is 336 after subtracting 864 from 1200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3360, and continue the process.

Advancing to step 13:
3360 divided by 864 is 3 with a remainder of 768.
The number 3 becomes the next digit in our result. 
Result so far: 74309.92013
Subtracting 2592 from 3360 leaves us with 768.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7680, and continue the process.

Moving on to step 14:
864 goes into 7680 8 times with a remainder of 768.
Use 8 as the next digit of our solution. 
Result so far: 74309.920138
The remainder is 768 after subtracting 6912 from 7680.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7680, and continue the process.

On to step 15:
864 can be fit into 7680 8 times, resulting in a remainder of 768.
The number 8 becomes the next digit in our result. 
Result so far: 74309.9201388
Deduct 6912 from 7680 and we're left with 768.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7680, and continue the process.

The final result is 74309.9201388 with a remainder of 7.68e-06.