Let's divide 128815 by 10
We want to figure out the number of times 128815 can be divided by 10.

Going ahead to step 1:
If we divide 1 by 10, we get 0 and a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Bring next digit (2) of the dividend behind the 1 and repeat the process: 12 / 10

Let's proceed to step 2:
If we divide 12 by 10, we get 1 and a remainder of 2.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we subtract 10 from 12, we get 2.
Grab the next digit (8) from the dividend, add it to 2, then carry on: 28 / 10

Step 3:
The number 10 fits into 28 2 times, leaving a remainder of 8.
Write down 2 as next digit of the result. 
Result so far: 12.0
Subtracting 20 from 28 leaves us with 8.
Fetch the next digit (8) from the dividend, attach it to 8 and continue: 88 / 10

Going ahead to step 4:
The number 10 fits into 88 8 times, leaving a remainder of 8.
The number 8 becomes the next digit in our result. 
Result so far: 128.0
Subtract 80 from 88 to get 8.
Grab the next digit (1) from the dividend, add it to 8, then carry on: 81 / 10

Moving on to step 5:
81 divided by 10 is 8 with a remainder of 1.
The next digit of our result is 8. 
Result so far: 1288.0
Subtracting 80 from 81 leaves us with 1.
Grab the next digit (5) from the dividend, add it to 1, then carry on: 15 / 10

Let's proceed to step 6:
10 can be fit into 15 1 times, resulting in a remainder of 5.
The next digit of our result is 1. 
Result so far: 12881.0
Subtracting 10 from 15 leaves us 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.

Let's proceed to step 7:
If we divide 50 by 10, we get 5 and a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 12881.5
If we take 50 away from 50, 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.

On to step 8:
If we divide 0 by 10, we get 0 and a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 12881.5
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 9:
10 goes into 0 0 times with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 12881.5
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 final result is 12881.5 with a remainder of 0.0.