275430 ÷ 15 
The aim is to understand the frequency of 15 in 275430.

Going ahead to step 1:
15 goes into 2 0 times with a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Fetch the next digit (7) from the dividend, attach it to 2 and continue: 27 / 15

Advancing to step 2:
If we divide 27 by 15, we get 1 and a remainder of 12.
The next digit of our result is 1. 
Result so far: 1.0
Deduct 15 from 27 and we're left with 12.
Fetch the next digit (5) from the dividend, attach it to 12 and continue: 125 / 15

Let's proceed to step 3:
The number 15 fits into 125 8 times, leaving a remainder of 5.
The next digit of our result is 8. 
Result so far: 18.0
The remainder is 5 after subtracting 120 from 125.
Bring next digit (4) of the dividend behind the 5 and repeat the process: 54 / 15

Step 4:
The number 15 fits into 54 3 times, leaving a remainder of 9.
The number 3 becomes the next digit in our result. 
Result so far: 183.0
If we subtract 45 from 54, we get 9.
Bring next digit (3) of the dividend behind the 9 and repeat the process: 93 / 15

On to step 5:
15 can be fit into 93 6 times, resulting in a remainder of 3.
Put 6 as the next digit of the answer. 
Result so far: 1836.0
Deduct 90 from 93 and we're left with 3.
Include the next digit (0) from the dividend after 3, then repeat: 30 / 15

Moving on to step 6:
When dividing 30 by 15, we get 2 with a remainder of 0.
The next digit of our result is 2. 
Result so far: 18362.0
If we subtract 30 from 30, 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.

Moving on to step 7:
The number 15 fits into 0 0 times, leaving a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 18362.0
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.

Advancing to step 8:
15 goes into 0 0 times with a remainder of 0.
The next digit of our result is 0. 
Result so far: 18362.0
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.

The final result is 18362.0 with a remainder of 0.0.