We divide 857259 by 66
We're looking to find how many times 66 goes into 857259.

Going ahead to step 1:
66 goes into 8 0 times with a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Take the next digit (5) from the dividend and append it to 8, then repeat: 85 / 66

On to step 2:
If we divide 85 by 66, we get 1 and a remainder of 19.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Deduct 66 from 85 and we're left with 19.
Take the next digit (7) from the dividend and append it to 19, then repeat: 197 / 66

Going ahead to step 3:
66 goes into 197 2 times with a remainder of 65.
The next digit of our result is 2. 
Result so far: 12.0
Subtract 132 from 197 to get 65.
Bring next digit (2) of the dividend behind the 65 and repeat the process: 652 / 66

Moving on to step 4:
652 divided by 66 is 9 with a remainder of 58.
Record the quotient 9 as the next digit in the result. 
Result so far: 129.0
Subtract 594 from 652 to get 58.
Fetch the next digit (5) from the dividend, attach it to 58 and continue: 585 / 66

Let's proceed to step 5:
66 can be fit into 585 8 times, resulting in a remainder of 57.
The number 8 becomes the next digit in our result. 
Result so far: 1298.0
Deduct 528 from 585 and we're left with 57.
Take the next digit (9) from the dividend and append it to 57, then repeat: 579 / 66

On to step 6:
When dividing 579 by 66, we get 8 with a remainder of 51.
Use 8 as the next digit of our solution. 
Result so far: 12988.0
Subtract 528 from 579 to get 51.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

Let's proceed to step 7:
The number 66 fits into 510 7 times, leaving a remainder of 48.
Put 7 as the next digit of the answer. 
Result so far: 12988.7
If we subtract 462 from 510, we get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

On to step 8:
The number 66 fits into 480 7 times, leaving a remainder of 18.
The number 7 becomes the next digit in our result. 
Result so far: 12988.77
Deduct 462 from 480 and we're left 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.

The final result is 12988.77 with a remainder of 0.018.