We're dividing 12579015 by 871 
We want to figure out the number of times 12579015 can be divided by 871.

Moving on to step 1:
871 goes into 1 0 times with a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Bring next digit (2) of the dividend behind the 1 and repeat the process: 12 / 871

Advancing to step 2:
871 can be fit into 12 0 times, resulting in a remainder of 12.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 12 after subtracting 0 from 12.
Grab the next digit (5) from the dividend, add it to 12, then carry on: 125 / 871

Advancing to step 3:
The number 871 fits into 125 0 times, leaving a remainder of 125.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 125, we get 125.
Append the next digit (7) from the dividend to 125 and continue with: 1257 / 871

Let's proceed to step 4:
1257 divided by 871 is 1 with a remainder of 386.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtract 871 from 1257 to get 386.
Append the next digit (9) from the dividend to 386 and continue with: 3869 / 871

Step 5:
871 can be fit into 3869 4 times, resulting in a remainder of 385.
Use 4 as the next digit of our solution. 
Result so far: 14.0
If we take 3484 away from 3869, we end up with 385.
Take the next digit (0) from the dividend and append it to 385, then repeat: 3850 / 871

Step 6:
871 goes into 3850 4 times with a remainder of 366.
The number 4 becomes the next digit in our result. 
Result so far: 144.0
If we subtract 3484 from 3850, we get 366.
Take the next digit (1) from the dividend and append it to 366, then repeat: 3661 / 871

Moving on to step 7:
3661 divided by 871 is 4 with a remainder of 177.
Use 4 as the next digit of our solution. 
Result so far: 1444.0
If we take 3484 away from 3661, we end up with 177.
Append the next digit (5) from the dividend to 177 and continue with: 1775 / 871

Advancing to step 8:
If we divide 1775 by 871, we get 2 and a remainder of 33.
Use 2 as the next digit of our solution. 
Result so far: 14442.0
If we take 1742 away from 1775, we end up with 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Let's proceed to step 9:
When dividing 330 by 871, we get 0 with a remainder of 330.
Use 0 as the next digit of our solution. 
Result so far: 14442.0
If we subtract 0 from 330, we get 330.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3300, and continue the process.

Step 10:
3300 divided by 871 is 3 with a remainder of 687.
The next digit of our result is 3. 
Result so far: 14442.03
Subtracting 2613 from 3300 leaves us with 687.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6870, and continue the process.

Let's proceed to step 11:
If we divide 6870 by 871, we get 7 and a remainder of 773.
Use 7 as the next digit of our solution. 
Result so far: 14442.037
Subtract 6097 from 6870 to get 773.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7730, and continue the process.

Step 12:
871 can be fit into 7730 8 times, resulting in a remainder of 762.
The next digit of our result is 8. 
Result so far: 14442.0378
Deduct 6968 from 7730 and we're left with 762.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7620, and continue the process.

Let's proceed to step 13:
When dividing 7620 by 871, we get 8 with a remainder of 652.
The number 8 becomes the next digit in our result. 
Result so far: 14442.03788
Subtract 6968 from 7620 to get 652.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6520, and continue the process.

The final result is 14442.03788 with a remainder of 0.000652.