We look at the division of 611472 by 15 
The aim is to understand the frequency of 15 in 611472.

Step 1:
If we divide 6 by 15, we get 0 and a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Fetch the next digit (1) from the dividend, attach it to 6 and continue: 61 / 15

Advancing to step 2:
61 divided by 15 is 4 with a remainder of 1.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
Deduct 60 from 61 and we're left with 1.
Include the next digit (1) from the dividend after 1, then repeat: 11 / 15

Moving on to step 3:
The number 15 fits into 11 0 times, leaving a remainder of 11.
Put 0 as the next digit of the answer. 
Result so far: 40.0
If we subtract 0 from 11, we get 11.
Fetch the next digit (4) from the dividend, attach it to 11 and continue: 114 / 15

On to step 4:
114 divided by 15 is 7 with a remainder of 9.
Record the quotient 7 as the next digit in the result. 
Result so far: 407.0
Subtract 105 from 114 to get 9.
Fetch the next digit (7) from the dividend, attach it to 9 and continue: 97 / 15

Let's proceed to step 5:
15 goes into 97 6 times with a remainder of 7.
Record the quotient 6 as the next digit in the result. 
Result so far: 4076.0
Subtracting 90 from 97 leaves us with 7.
Bring next digit (2) of the dividend behind the 7 and repeat the process: 72 / 15

Step 6:
15 can be fit into 72 4 times, resulting in a remainder of 12.
Use 4 as the next digit of our solution. 
Result so far: 40764.0
If we subtract 60 from 72, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Let's proceed to step 7:
15 goes into 120 8 times with a remainder of 0.
Use 8 as the next digit of our solution. 
Result so far: 40764.8
Subtracting 120 from 120 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.

Advancing to step 8:
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: 40764.8
Subtracting 0 from 0 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.

On to step 9:
The number 15 fits into 0 0 times, leaving a remainder of 0.
The next digit of our result is 0. 
Result so far: 40764.8
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 outcome is 40764.8, with a leftover of 0.0.