We look at the division of 126047 by 15 
The aim is to understand the frequency of 15 in 126047.

Advancing to step 1:
When dividing 1 by 15, we get 0 with 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.
Take the next digit (2) from the dividend and append it to 1, then repeat: 12 / 15

Step 2:
15 goes into 12 0 times with a remainder of 12.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 12, we get 12.
Take the next digit (6) from the dividend and append it to 12, then repeat: 126 / 15

Advancing to step 3:
15 can be fit into 126 8 times, resulting in a remainder of 6.
Record the quotient 8 as the next digit in the result. 
Result so far: 8.0
Subtract 120 from 126 to get 6.
Grab the next digit (0) from the dividend, add it to 6, then carry on: 60 / 15

Let's proceed to step 4:
60 divided by 15 is 4 with a remainder of 0.
The number 4 becomes the next digit in our result. 
Result so far: 84.0
If we take 60 away from 60, we end up with 0.
Bring next digit (4) of the dividend behind the 0 and repeat the process: 4 / 15

Going ahead to step 5:
4 divided by 15 is 0 with a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 840.0
Subtract 0 from 4 to get 4.
Take the next digit (7) from the dividend and append it to 4, then repeat: 47 / 15

On to step 6:
If we divide 47 by 15, we get 3 and a remainder of 2.
The next digit of our result is 3. 
Result so far: 8403.0
The remainder is 2 after subtracting 45 from 47.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Moving on to step 7:
If we divide 20 by 15, we get 1 and a remainder of 5.
The next digit of our result is 1. 
Result so far: 8403.1
Deduct 15 from 20 and we're left 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.

On to step 8:
When dividing 50 by 15, we get 3 with a remainder of 5.
Put 3 as the next digit of the answer. 
Result so far: 8403.13
The remainder is 5 after subtracting 45 from 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Going ahead to step 9:
50 divided by 15 is 3 with a remainder of 5.
Record the quotient 3 as the next digit in the result. 
Result so far: 8403.133
Deduct 45 from 50 and we're left 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.

Our division results in 8403.133 with a remaining 0.0005.