We look at the division of 86172066 by 286 
We're looking to find how many times 286 goes into 86172066.

Moving on to step 1:
When dividing 8 by 286, we get 0 with a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Take the next digit (6) from the dividend and append it to 8, then repeat: 86 / 286

Going ahead to step 2:
If we divide 86 by 286, we get 0 and a remainder of 86.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 86 and we're left with 86.
Include the next digit (1) from the dividend after 86, then repeat: 861 / 286

Moving on to step 3:
If we divide 861 by 286, we get 3 and a remainder of 3.
Use 3 as the next digit of our solution. 
Result so far: 3.0
If we take 858 away from 861, we end up with 3.
Fetch the next digit (7) from the dividend, attach it to 3 and continue: 37 / 286

Going ahead to step 4:
If we divide 37 by 286, we get 0 and a remainder of 37.
Write down 0 as next digit of the result. 
Result so far: 30.0
If we subtract 0 from 37, we get 37.
Grab the next digit (2) from the dividend, add it to 37, then carry on: 372 / 286

On to step 5:
If we divide 372 by 286, we get 1 and a remainder of 86.
Put 1 as the next digit of the answer. 
Result so far: 301.0
Deduct 286 from 372 and we're left with 86.
Append the next digit (0) from the dividend to 86 and continue with: 860 / 286

Going ahead to step 6:
286 goes into 860 3 times with a remainder of 2.
The number 3 becomes the next digit in our result. 
Result so far: 3013.0
Subtracting 858 from 860 leaves us with 2.
Bring next digit (6) of the dividend behind the 2 and repeat the process: 26 / 286

Let's proceed to step 7:
When dividing 26 by 286, we get 0 with a remainder of 26.
The number 0 becomes the next digit in our result. 
Result so far: 30130.0
Subtract 0 from 26 to get 26.
Take the next digit (6) from the dividend and append it to 26, then repeat: 266 / 286

On to step 8:
286 goes into 266 0 times with a remainder of 266.
The number 0 becomes the next digit in our result. 
Result so far: 301300.0
Subtract 0 from 266 to get 266.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2660, and continue the process.

Step 9:
286 goes into 2660 9 times with a remainder of 86.
Record the quotient 9 as the next digit in the result. 
Result so far: 301300.9
If we take 2574 away from 2660, we end up with 86.
Since there are no more digits in the dividend, we add a zero to the remainder making it 860, and continue the process.

Step 10:
When dividing 860 by 286, we get 3 with a remainder of 2.
Put 3 as the next digit of the answer. 
Result so far: 301300.93
Deduct 858 from 860 and we're left with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Let's proceed to step 11:
286 goes into 20 0 times with a remainder of 20.
Use 0 as the next digit of our solution. 
Result so far: 301300.93
If we take 0 away from 20, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

On to step 12:
200 divided by 286 is 0 with a remainder of 200.
Use 0 as the next digit of our solution. 
Result so far: 301300.93
Subtracting 0 from 200 leaves us with 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

After the division, we end up with 301300.93 and a remainder of 0.002.