251515 divided by 10 
We want to figure out the number of times 251515 can be divided by 10.

Advancing to step 1:
The number 10 fits into 2 0 times, leaving a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Include the next digit (5) from the dividend after 2, then repeat: 25 / 10

Step 2:
The number 10 fits into 25 2 times, leaving a remainder of 5.
The next digit of our result is 2. 
Result so far: 2.0
Deduct 20 from 25 and we're left with 5.
Fetch the next digit (1) from the dividend, attach it to 5 and continue: 51 / 10

Let's proceed to step 3:
When dividing 51 by 10, we get 5 with a remainder of 1.
Use 5 as the next digit of our solution. 
Result so far: 25.0
Subtracting 50 from 51 leaves us with 1.
Include the next digit (5) from the dividend after 1, then repeat: 15 / 10

Advancing to step 4:
10 goes into 15 1 times with a remainder of 5.
Use 1 as the next digit of our solution. 
Result so far: 251.0
The remainder is 5 after subtracting 10 from 15.
Bring next digit (1) of the dividend behind the 5 and repeat the process: 51 / 10

Let's proceed to step 5:
10 goes into 51 5 times with a remainder of 1.
Record the quotient 5 as the next digit in the result. 
Result so far: 2515.0
Subtract 50 from 51 to get 1.
Fetch the next digit (5) from the dividend, attach it to 1 and continue: 15 / 10

Moving on to step 6:
10 can be fit into 15 1 times, resulting in a remainder of 5.
Use 1 as the next digit of our solution. 
Result so far: 25151.0
Deduct 10 from 15 and we're left with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

On to step 7:
10 goes into 50 5 times with a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 25151.5
Subtracting 50 from 50 leaves us 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.

Step 8:
If we divide 0 by 10, we get 0 and a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 25151.5
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.

Step 9:
10 goes into 0 0 times with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 25151.5
If we take 0 away from 0, we end up 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.

Our division results in 25151.5 with a remaining 0.0.