We're dividing 851772 by 2 
We're looking to find how many times 2 goes into 851772.

Let's proceed to step 1:
8 divided by 2 is 4 with a remainder of 0.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
If we take 8 away from 8, we end up with 0.
Take the next digit (5) from the dividend and append it to 0, then repeat: 5 / 2

Let's proceed to step 2:
2 can be fit into 5 2 times, resulting in a remainder of 1.
The next digit of our result is 2. 
Result so far: 42.0
Deduct 4 from 5 and we're left with 1.
Append the next digit (1) from the dividend to 1 and continue with: 11 / 2

Let's proceed to step 3:
2 can be fit into 11 5 times, resulting in a remainder of 1.
Record the quotient 5 as the next digit in the result. 
Result so far: 425.0
If we subtract 10 from 11, we get 1.
Include the next digit (7) from the dividend after 1, then repeat: 17 / 2

On to step 4:
2 can be fit into 17 8 times, resulting in a remainder of 1.
Record the quotient 8 as the next digit in the result. 
Result so far: 4258.0
If we subtract 16 from 17, we get 1.
Take the next digit (7) from the dividend and append it to 1, then repeat: 17 / 2

Let's proceed to step 5:
17 divided by 2 is 8 with a remainder of 1.
Put 8 as the next digit of the answer. 
Result so far: 42588.0
If we subtract 16 from 17, we get 1.
Fetch the next digit (2) from the dividend, attach it to 1 and continue: 12 / 2

On to step 6:
2 can be fit into 12 6 times, resulting in a remainder of 0.
Put 6 as the next digit of the answer. 
Result so far: 425886.0
If we take 12 away from 12, we end up 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.

Moving on to step 7:
If we divide 0 by 2, we get 0 and a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 425886.0
Subtract 0 from 0 to 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.

Going ahead to step 8:
The number 2 fits into 0 0 times, leaving a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 425886.0
If we take 0 away from 0, we end up 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.

The final outcome is 425886.0, with a leftover of 0.0.