8015 ÷ 51 
We want to figure out the number of times 8015 can be divided by 51.

Going ahead to step 1:
51 can be fit into 8 0 times, resulting in a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Include the next digit (0) from the dividend after 8, then repeat: 80 / 51

Step 2:
80 divided by 51 is 1 with a remainder of 29.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
The remainder is 29 after subtracting 51 from 80.
Grab the next digit (1) from the dividend, add it to 29, then carry on: 291 / 51

On to step 3:
291 divided by 51 is 5 with a remainder of 36.
Write down 5 as next digit of the result. 
Result so far: 15.0
If we subtract 255 from 291, we get 36.
Bring next digit (5) of the dividend behind the 36 and repeat the process: 365 / 51

Moving on to step 4:
When dividing 365 by 51, we get 7 with a remainder of 8.
Record the quotient 7 as the next digit in the result. 
Result so far: 157.0
Subtracting 357 from 365 leaves us with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Advancing to step 5:
If we divide 80 by 51, we get 1 and a remainder of 29.
Put 1 as the next digit of the answer. 
Result so far: 157.1
Subtracting 51 from 80 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.

Step 6:
If we divide 290 by 51, we get 5 and a remainder of 35.
Record the quotient 5 as the next digit in the result. 
Result so far: 157.15
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:
51 can be fit into 350 6 times, resulting in a remainder of 44.
The number 6 becomes the next digit in our result. 
Result so far: 157.156
Subtracting 306 from 350 leaves us with 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Advancing to step 8:
440 divided by 51 is 8 with a remainder of 32.
The number 8 becomes the next digit in our result. 
Result so far: 157.1568
If we subtract 408 from 440, we get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Step 9:
If we divide 320 by 51, we get 6 and a remainder of 14.
The number 6 becomes the next digit in our result. 
Result so far: 157.15686
If we subtract 306 from 320, we get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Advancing to step 10:
If we divide 140 by 51, we get 2 and a remainder of 38.
Record the quotient 2 as the next digit in the result. 
Result so far: 157.156862
If we subtract 102 from 140, we get 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:
The number 51 fits into 380 7 times, leaving a remainder of 23.
Record the quotient 7 as the next digit in the result. 
Result so far: 157.1568627
Deduct 357 from 380 and we're left with 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Step 12:
51 goes into 230 4 times with a remainder of 26.
The next digit of our result is 4. 
Result so far: 157.15686274
Deduct 204 from 230 and we're left with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

The final outcome is 157.15686274, with a leftover of 2.6e-08.