Let's divide 105156 by 15
The aim is to understand the frequency of 15 in 105156.

Advancing to step 1:
When dividing 1 by 15, we get 0 with a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Fetch the next digit (0) from the dividend, attach it to 1 and continue: 10 / 15

Going ahead to step 2:
15 can be fit into 10 0 times, resulting in a remainder of 10.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 10 after subtracting 0 from 10.
Grab the next digit (5) from the dividend, add it to 10, then carry on: 105 / 15

Step 3:
If we divide 105 by 15, we get 7 and a remainder of 0.
The next digit of our result is 7. 
Result so far: 7.0
The remainder is 0 after subtracting 105 from 105.
Append the next digit (1) from the dividend to 0 and continue with: 1 / 15

Moving on to step 4:
The number 15 fits into 1 0 times, leaving a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 70.0
Deduct 0 from 1 and we're left with 1.
Bring next digit (5) of the dividend behind the 1 and repeat the process: 15 / 15

On to step 5:
15 can be fit into 15 1 times, resulting in a remainder of 0.
Record the quotient 1 as the next digit in the result. 
Result so far: 701.0
Deduct 15 from 15 and we're left with 0.
Include the next digit (6) from the dividend after 0, then repeat: 6 / 15

Going ahead to step 6:
The number 15 fits into 6 0 times, leaving a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 7010.0
If we take 0 away from 6, we end up with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Advancing to step 7:
When dividing 60 by 15, we get 4 with a remainder of 0.
Put 4 as the next digit of the answer. 
Result so far: 7010.4
If we take 60 away from 60, 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.

Moving on to step 8:
0 divided by 15 is 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 7010.4
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.

Going ahead to step 9:
If we divide 0 by 15, we get 0 and a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 7010.4
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.

The final result is 7010.4 with a remainder of 0.0.