We're dividing 86015 by 51 
We want to divide 86015 by 51.

Step 1:
The number 51 fits into 8 0 times, leaving a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Take the next digit (6) from the dividend and append it to 8, then repeat: 86 / 51

Advancing to step 2:
51 goes into 86 1 times with a remainder of 35.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtract 51 from 86 to get 35.
Bring next digit (0) of the dividend behind the 35 and repeat the process: 350 / 51

Let's proceed to step 3:
When dividing 350 by 51, we get 6 with a remainder of 44.
Record the quotient 6 as the next digit in the result. 
Result so far: 16.0
Subtract 306 from 350 to get 44.
Append the next digit (1) from the dividend to 44 and continue with: 441 / 51

Let's proceed to step 4:
441 divided by 51 is 8 with a remainder of 33.
The next digit of our result is 8. 
Result so far: 168.0
The remainder is 33 after subtracting 408 from 441.
Bring next digit (5) of the dividend behind the 33 and repeat the process: 335 / 51

Let's proceed to step 5:
The number 51 fits into 335 6 times, leaving a remainder of 29.
Put 6 as the next digit of the answer. 
Result so far: 1686.0
Subtracting 306 from 335 leaves us with 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Advancing to step 6:
If we divide 290 by 51, we get 5 and a remainder of 35.
Write down 5 as next digit of the result. 
Result so far: 1686.5
If we take 255 away from 290, we end up with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

On to step 7:
When dividing 350 by 51, we get 6 with a remainder of 44.
The next digit of our result is 6. 
Result so far: 1686.56
The remainder is 44 after subtracting 306 from 350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

On to step 8:
51 can be fit into 440 8 times, resulting in a remainder of 32.
The number 8 becomes the next digit in our result. 
Result so far: 1686.568
Subtracting 408 from 440 leaves us with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Going ahead to step 9:
320 divided by 51 is 6 with a remainder of 14.
The number 6 becomes the next digit in our result. 
Result so far: 1686.5686
If we take 306 away from 320, we end up with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

On to step 10:
51 goes into 140 2 times with a remainder of 38.
Put 2 as the next digit of the answer. 
Result so far: 1686.56862
Subtracting 102 from 140 leaves us with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Let's proceed to step 11:
51 goes into 380 7 times with a remainder of 23.
The number 7 becomes the next digit in our result. 
Result so far: 1686.568627
If we subtract 357 from 380, we get 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Let's proceed to step 12:
51 can be fit into 230 4 times, resulting in a remainder of 26.
The next digit of our result is 4. 
Result so far: 1686.5686274
Subtract 204 from 230 to get 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Going ahead to step 13:
If we divide 260 by 51, we get 5 and a remainder of 5.
Write down 5 as next digit of the result. 
Result so far: 1686.56862745
If we subtract 255 from 260, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

In conclusion, the division gives 1686.56862745 with a balance of 5e-09.