We look at the division of 285155 by 86 
Let's see how many times 86 fits into 285155.

Advancing to step 1:
If we divide 2 by 86, we get 0 and a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Include the next digit (8) from the dividend after 2, then repeat: 28 / 86

On to step 2:
The number 86 fits into 28 0 times, leaving a remainder of 28.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 28, we get 28.
Take the next digit (5) from the dividend and append it to 28, then repeat: 285 / 86

Advancing to step 3:
86 can be fit into 285 3 times, resulting in a remainder of 27.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
The remainder is 27 after subtracting 258 from 285.
Take the next digit (1) from the dividend and append it to 27, then repeat: 271 / 86

On to step 4:
When dividing 271 by 86, we get 3 with a remainder of 13.
The next digit of our result is 3. 
Result so far: 33.0
Subtracting 258 from 271 leaves us with 13.
Include the next digit (5) from the dividend after 13, then repeat: 135 / 86

Advancing to step 5:
135 divided by 86 is 1 with a remainder of 49.
Use 1 as the next digit of our solution. 
Result so far: 331.0
Subtracting 86 from 135 leaves us with 49.
Grab the next digit (5) from the dividend, add it to 49, then carry on: 495 / 86

On to step 6:
The number 86 fits into 495 5 times, leaving a remainder of 65.
The next digit of our result is 5. 
Result so far: 3315.0
The remainder is 65 after subtracting 430 from 495.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

On to step 7:
The number 86 fits into 650 7 times, leaving a remainder of 48.
Put 7 as the next digit of the answer. 
Result so far: 3315.7
Subtracting 602 from 650 leaves us with 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 86 fits into 480 5 times, leaving a remainder of 50.
Use 5 as the next digit of our solution. 
Result so far: 3315.75
If we subtract 430 from 480, we get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Moving on to step 9:
The number 86 fits into 500 5 times, leaving a remainder of 70.
Record the quotient 5 as the next digit in the result. 
Result so far: 3315.755
Subtract 430 from 500 to get 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Our division results in 3315.755 with a remaining 0.007.