We look at the division of 25015 by 6 
Let's see how many times 6 fits into 25015.

Advancing to step 1:
When dividing 2 by 6, we get 0 with a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Bring next digit (5) of the dividend behind the 2 and repeat the process: 25 / 6

Step 2:
6 goes into 25 4 times with a remainder of 1.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
Subtracting 24 from 25 leaves us with 1.
Bring next digit (0) of the dividend behind the 1 and repeat the process: 10 / 6

Moving on to step 3:
6 can be fit into 10 1 times, resulting in a remainder of 4.
Put 1 as the next digit of the answer. 
Result so far: 41.0
If we take 6 away from 10, we end up with 4.
Append the next digit (1) from the dividend to 4 and continue with: 41 / 6

Moving on to step 4:
If we divide 41 by 6, we get 6 and a remainder of 5.
Record the quotient 6 as the next digit in the result. 
Result so far: 416.0
The remainder is 5 after subtracting 36 from 41.
Include the next digit (5) from the dividend after 5, then repeat: 55 / 6

Advancing to step 5:
55 divided by 6 is 9 with a remainder of 1.
The next digit of our result is 9. 
Result so far: 4169.0
Deduct 54 from 55 and we're left with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Advancing to step 6:
10 divided by 6 is 1 with a remainder of 4.
Put 1 as the next digit of the answer. 
Result so far: 4169.1
If we take 6 away from 10, we end up with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Advancing to step 7:
6 can be fit into 40 6 times, resulting in a remainder of 4.
Use 6 as the next digit of our solution. 
Result so far: 4169.16
If we subtract 36 from 40, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

On to step 8:
6 can be fit into 40 6 times, resulting in a remainder of 4.
Use 6 as the next digit of our solution. 
Result so far: 4169.166
Deduct 36 from 40 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

The final outcome is 4169.166, with a leftover of 0.0004.