We're dividing 85666594 by 2 
Let's see how many times 2 fits into 85666594.

On to step 1:
The number 2 fits into 8 4 times, leaving a remainder of 0.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
The remainder is 0 after subtracting 8 from 8.
Include the next digit (5) from the dividend after 0, then repeat: 5 / 2

Step 2:
The number 2 fits into 5 2 times, leaving a remainder of 1.
The next digit of our result is 2. 
Result so far: 42.0
If we subtract 4 from 5, we get 1.
Include the next digit (6) from the dividend after 1, then repeat: 16 / 2

Let's proceed to step 3:
The number 2 fits into 16 8 times, leaving a remainder of 0.
The next digit of our result is 8. 
Result so far: 428.0
The remainder is 0 after subtracting 16 from 16.
Take the next digit (6) from the dividend and append it to 0, then repeat: 6 / 2

Advancing to step 4:
If we divide 6 by 2, we get 3 and a remainder of 0.
Use 3 as the next digit of our solution. 
Result so far: 4283.0
Subtract 6 from 6 to get 0.
Bring next digit (6) of the dividend behind the 0 and repeat the process: 6 / 2

Going ahead to step 5:
The number 2 fits into 6 3 times, leaving a remainder of 0.
Put 3 as the next digit of the answer. 
Result so far: 42833.0
If we subtract 6 from 6, we get 0.
Include the next digit (5) from the dividend after 0, then repeat: 5 / 2

Step 6:
The number 2 fits into 5 2 times, leaving a remainder of 1.
The next digit of our result is 2. 
Result so far: 428332.0
If we subtract 4 from 5, we get 1.
Include the next digit (9) from the dividend after 1, then repeat: 19 / 2

Moving on to step 7:
2 goes into 19 9 times with a remainder of 1.
Put 9 as the next digit of the answer. 
Result so far: 4283329.0
Subtract 18 from 19 to get 1.
Append the next digit (4) from the dividend to 1 and continue with: 14 / 2

Moving on to step 8:
When dividing 14 by 2, we get 7 with a remainder of 0.
Write down 7 as next digit of the result. 
Result so far: 42833297.0
If we take 14 away from 14, 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.

Step 9:
0 divided by 2 is 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 42833297.0
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.

On to step 10:
When dividing 0 by 2, we get 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 42833297.0
If we subtract 0 from 0, 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.

Our division results in 42833297.0 with a remaining 0.0.