We look at the division of 16515 by 25 
We want to figure out the number of times 16515 can be divided by 25.

Moving on to step 1:
25 goes into 1 0 times with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Fetch the next digit (6) from the dividend, attach it to 1 and continue: 16 / 25

Step 2:
25 goes into 16 0 times with a remainder of 16.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 16 leaves us with 16.
Append the next digit (5) from the dividend to 16 and continue with: 165 / 25

Advancing to step 3:
165 divided by 25 is 6 with a remainder of 15.
Record the quotient 6 as the next digit in the result. 
Result so far: 6.0
Subtract 150 from 165 to get 15.
Bring next digit (1) of the dividend behind the 15 and repeat the process: 151 / 25

Advancing to step 4:
If we divide 151 by 25, we get 6 and a remainder of 1.
Record the quotient 6 as the next digit in the result. 
Result so far: 66.0
If we take 150 away from 151, we end up with 1.
Fetch the next digit (5) from the dividend, attach it to 1 and continue: 15 / 25

Step 5:
25 goes into 15 0 times with a remainder of 15.
The number 0 becomes the next digit in our result. 
Result so far: 660.0
Subtract 0 from 15 to get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Advancing to step 6:
The number 25 fits into 150 6 times, leaving a remainder of 0.
The number 6 becomes the next digit in our result. 
Result so far: 660.6
The remainder is 0 after subtracting 150 from 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 7:
25 goes into 0 0 times with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 660.6
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 8:
25 goes into 0 0 times with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 660.6
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The quotient of the division is 660.6, and the remainder is 0.0.