We're dividing 856800 by 66 
We want to figure out the number of times 856800 can be divided by 66.

Moving on to step 1:
8 divided by 66 is 0 with a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Include the next digit (5) from the dividend after 8, then repeat: 85 / 66

Let's proceed to step 2:
The number 66 fits into 85 1 times, leaving a remainder of 19.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtract 66 from 85 to get 19.
Include the next digit (6) from the dividend after 19, then repeat: 196 / 66

Going ahead to step 3:
196 divided by 66 is 2 with a remainder of 64.
Record the quotient 2 as the next digit in the result. 
Result so far: 12.0
The remainder is 64 after subtracting 132 from 196.
Append the next digit (8) from the dividend to 64 and continue with: 648 / 66

On to step 4:
The number 66 fits into 648 9 times, leaving a remainder of 54.
The next digit of our result is 9. 
Result so far: 129.0
Deduct 594 from 648 and we're left with 54.
Bring next digit (0) of the dividend behind the 54 and repeat the process: 540 / 66

Step 5:
The number 66 fits into 540 8 times, leaving a remainder of 12.
Put 8 as the next digit of the answer. 
Result so far: 1298.0
Subtracting 528 from 540 leaves us with 12.
Append the next digit (0) from the dividend to 12 and continue with: 120 / 66

Step 6:
66 can be fit into 120 1 times, resulting in a remainder of 54.
The number 1 becomes the next digit in our result. 
Result so far: 12981.0
Deduct 66 from 120 and we're left with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Step 7:
The number 66 fits into 540 8 times, leaving a remainder of 12.
The next digit of our result is 8. 
Result so far: 12981.8
Subtract 528 from 540 to get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Going ahead to step 8:
66 can be fit into 120 1 times, resulting in a remainder of 54.
Record the quotient 1 as the next digit in the result. 
Result so far: 12981.81
Subtracting 66 from 120 leaves us with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

On to step 9:
66 goes into 540 8 times with a remainder of 12.
The next digit of our result is 8. 
Result so far: 12981.818
The remainder is 12 after subtracting 528 from 540.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Moving on to step 10:
66 goes into 120 1 times with a remainder of 54.
Write down 1 as next digit of the result. 
Result so far: 12981.8181
Subtracting 66 from 120 leaves us with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Going ahead to step 11:
The number 66 fits into 540 8 times, leaving a remainder of 12.
Use 8 as the next digit of our solution. 
Result so far: 12981.81818
If we take 528 away from 540, 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.

Advancing to step 12:
The number 66 fits into 120 1 times, leaving a remainder of 54.
Write down 1 as next digit of the result. 
Result so far: 12981.818181
Subtract 66 from 120 to get 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Going ahead to step 13:
The number 66 fits into 540 8 times, leaving a remainder of 12.
Put 8 as the next digit of the answer. 
Result so far: 12981.8181818
If we take 528 away from 540, 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.

Going ahead to step 14:
66 can be fit into 120 1 times, resulting in a remainder of 54.
Put 1 as the next digit of the answer. 
Result so far: 12981.81818181
The remainder is 54 after subtracting 66 from 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

The final outcome is 12981.81818181, with a leftover of 5.4e-08.