We're dividing 866357 by 64 
Our goal is to divide 866357 by 64.

Advancing to step 1:
The number 64 fits into 8 0 times, leaving a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Append the next digit (6) from the dividend to 8 and continue with: 86 / 64

Step 2:
If we divide 86 by 64, we get 1 and a remainder of 22.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Deduct 64 from 86 and we're left with 22.
Include the next digit (6) from the dividend after 22, then repeat: 226 / 64

Step 3:
64 goes into 226 3 times with a remainder of 34.
Record the quotient 3 as the next digit in the result. 
Result so far: 13.0
Subtracting 192 from 226 leaves us with 34.
Append the next digit (3) from the dividend to 34 and continue with: 343 / 64

On to step 4:
The number 64 fits into 343 5 times, leaving a remainder of 23.
The next digit of our result is 5. 
Result so far: 135.0
If we take 320 away from 343, we end up with 23.
Bring next digit (5) of the dividend behind the 23 and repeat the process: 235 / 64

Advancing to step 5:
64 goes into 235 3 times with a remainder of 43.
Record the quotient 3 as the next digit in the result. 
Result so far: 1353.0
The remainder is 43 after subtracting 192 from 235.
Fetch the next digit (7) from the dividend, attach it to 43 and continue: 437 / 64

On to step 6:
If we divide 437 by 64, we get 6 and a remainder of 53.
The next digit of our result is 6. 
Result so far: 13536.0
Subtract 384 from 437 to get 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Step 7:
The number 64 fits into 530 8 times, leaving a remainder of 18.
The number 8 becomes the next digit in our result. 
Result so far: 13536.8
Subtracting 512 from 530 leaves us with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Advancing to step 8:
64 goes into 180 2 times with a remainder of 52.
Record the quotient 2 as the next digit in the result. 
Result so far: 13536.82
Deduct 128 from 180 and we're left with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Going ahead to step 9:
520 divided by 64 is 8 with a remainder of 8.
The number 8 becomes the next digit in our result. 
Result so far: 13536.828
If we take 512 away from 520, we end up with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

On to step 10:
64 can be fit into 80 1 times, resulting in a remainder of 16.
The number 1 becomes the next digit in our result. 
Result so far: 13536.8281
Deduct 64 from 80 and we're left with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Step 11:
160 divided by 64 is 2 with a remainder of 32.
Put 2 as the next digit of the answer. 
Result so far: 13536.82812
If we subtract 128 from 160, we get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Step 12:
The number 64 fits into 320 5 times, leaving a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 13536.828125
If we subtract 320 from 320, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 13:
0 divided by 64 is 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 13536.828125
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 14:
When dividing 0 by 64, we get 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 13536.828125
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final result is 13536.828125 with a remainder of 0.0.