We're dividing 102315 by 4 
We're looking to find how many times 4 goes into 102315.

On to step 1:
If we divide 1 by 4, we get 0 and a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Append the next digit (0) from the dividend to 1 and continue with: 10 / 4

Advancing to step 2:
When dividing 10 by 4, we get 2 with a remainder of 2.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
The remainder is 2 after subtracting 8 from 10.
Include the next digit (2) from the dividend after 2, then repeat: 22 / 4

Moving on to step 3:
22 divided by 4 is 5 with a remainder of 2.
Put 5 as the next digit of the answer. 
Result so far: 25.0
If we take 20 away from 22, we end up with 2.
Take the next digit (3) from the dividend and append it to 2, then repeat: 23 / 4

Going ahead to step 4:
If we divide 23 by 4, we get 5 and a remainder of 3.
The number 5 becomes the next digit in our result. 
Result so far: 255.0
If we take 20 away from 23, we end up with 3.
Fetch the next digit (1) from the dividend, attach it to 3 and continue: 31 / 4

Step 5:
When dividing 31 by 4, we get 7 with a remainder of 3.
Write down 7 as next digit of the result. 
Result so far: 2557.0
Subtracting 28 from 31 leaves us with 3.
Include the next digit (5) from the dividend after 3, then repeat: 35 / 4

Moving on to step 6:
If we divide 35 by 4, we get 8 and a remainder of 3.
Record the quotient 8 as the next digit in the result. 
Result so far: 25578.0
Subtract 32 from 35 to get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Moving on to step 7:
30 divided by 4 is 7 with a remainder of 2.
The next digit of our result is 7. 
Result so far: 25578.7
If we take 28 away from 30, we end up with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Step 8:
If we divide 20 by 4, we get 5 and a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 25578.75
Subtracting 20 from 20 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.

Let's proceed to step 9:
The number 4 fits into 0 0 times, leaving a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 25578.75
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.

On to step 10:
The number 4 fits into 0 0 times, leaving a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 25578.75
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 25578.75 with a remaining 0.0.