851929 divided by 66 
We want to figure out the number of times 851929 can be divided by 66.

Advancing to step 1:
66 goes into 8 0 times with a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Include the next digit (5) from the dividend after 8, then repeat: 85 / 66

On to step 2:
66 can be fit into 85 1 times, resulting in a remainder of 19.
The next digit of our result is 1. 
Result so far: 1.0
If we take 66 away from 85, we end up with 19.
Append the next digit (1) from the dividend to 19 and continue with: 191 / 66

Advancing to step 3:
When dividing 191 by 66, we get 2 with a remainder of 59.
Record the quotient 2 as the next digit in the result. 
Result so far: 12.0
If we subtract 132 from 191, we get 59.
Take the next digit (9) from the dividend and append it to 59, then repeat: 599 / 66

Let's proceed to step 4:
If we divide 599 by 66, we get 9 and a remainder of 5.
Write down 9 as next digit of the result. 
Result so far: 129.0
The remainder is 5 after subtracting 594 from 599.
Include the next digit (2) from the dividend after 5, then repeat: 52 / 66

Moving on to step 5:
The number 66 fits into 52 0 times, leaving a remainder of 52.
Write down 0 as next digit of the result. 
Result so far: 1290.0
If we subtract 0 from 52, we get 52.
Grab the next digit (9) from the dividend, add it to 52, then carry on: 529 / 66

Let's proceed to step 6:
529 divided by 66 is 8 with a remainder of 1.
Put 8 as the next digit of the answer. 
Result so far: 12908.0
If we subtract 528 from 529, we get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Going ahead to step 7:
66 can be fit into 10 0 times, resulting in a remainder of 10.
The number 0 becomes the next digit in our result. 
Result so far: 12908.0
Subtract 0 from 10 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Let's proceed to step 8:
100 divided by 66 is 1 with a remainder of 34.
The next digit of our result is 1. 
Result so far: 12908.01
Subtracting 66 from 100 leaves us with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Moving on to step 9:
When dividing 340 by 66, we get 5 with a remainder of 10.
Use 5 as the next digit of our solution. 
Result so far: 12908.015
Deduct 330 from 340 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 10:
If we divide 100 by 66, we get 1 and a remainder of 34.
The next digit of our result is 1. 
Result so far: 12908.0151
If we subtract 66 from 100, we get 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Moving on to step 11:
When dividing 340 by 66, we get 5 with a remainder of 10.
Use 5 as the next digit of our solution. 
Result so far: 12908.01515
Subtract 330 from 340 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Step 12:
The number 66 fits into 100 1 times, leaving a remainder of 34.
Record the quotient 1 as the next digit in the result. 
Result so far: 12908.015151
If we subtract 66 from 100, we get 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Let's proceed to step 13:
66 goes into 340 5 times with a remainder of 10.
Put 5 as the next digit of the answer. 
Result so far: 12908.0151515
If we take 330 away from 340, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 14:
66 goes into 100 1 times with a remainder of 34.
The next digit of our result is 1. 
Result so far: 12908.01515151
If we subtract 66 from 100, we get 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

The final outcome is 12908.01515151, with a leftover of 3.4e-08.