19026217 ÷ 15 
The aim is to understand the frequency of 15 in 19026217.

Moving on to step 1:
15 can be fit into 1 0 times, resulting in a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Include the next digit (9) from the dividend after 1, then repeat: 19 / 15

On to step 2:
19 divided by 15 is 1 with a remainder of 4.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we take 15 away from 19, we end up with 4.
Bring next digit (0) of the dividend behind the 4 and repeat the process: 40 / 15

Going ahead to step 3:
15 goes into 40 2 times with a remainder of 10.
The next digit of our result is 2. 
Result so far: 12.0
The remainder is 10 after subtracting 30 from 40.
Fetch the next digit (2) from the dividend, attach it to 10 and continue: 102 / 15

Let's proceed to step 4:
The number 15 fits into 102 6 times, leaving a remainder of 12.
Write down 6 as next digit of the result. 
Result so far: 126.0
Subtract 90 from 102 to get 12.
Fetch the next digit (6) from the dividend, attach it to 12 and continue: 126 / 15

Moving on to step 5:
When dividing 126 by 15, we get 8 with a remainder of 6.
Use 8 as the next digit of our solution. 
Result so far: 1268.0
Subtracting 120 from 126 leaves us with 6.
Include the next digit (2) from the dividend after 6, then repeat: 62 / 15

Advancing to step 6:
If we divide 62 by 15, we get 4 and a remainder of 2.
Record the quotient 4 as the next digit in the result. 
Result so far: 12684.0
If we take 60 away from 62, we end up with 2.
Take the next digit (1) from the dividend and append it to 2, then repeat: 21 / 15

Let's proceed to step 7:
The number 15 fits into 21 1 times, leaving a remainder of 6.
Put 1 as the next digit of the answer. 
Result so far: 126841.0
If we take 15 away from 21, we end up with 6.
Append the next digit (7) from the dividend to 6 and continue with: 67 / 15

On to step 8:
If we divide 67 by 15, we get 4 and a remainder of 7.
The number 4 becomes the next digit in our result. 
Result so far: 1268414.0
Subtracting 60 from 67 leaves us with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

On to step 9:
15 can be fit into 70 4 times, resulting in a remainder of 10.
Use 4 as the next digit of our solution. 
Result so far: 1268414.4
If we subtract 60 from 70, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Let's proceed to step 10:
100 divided by 15 is 6 with a remainder of 10.
The next digit of our result is 6. 
Result so far: 1268414.46
Subtracting 90 from 100 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Step 11:
If we divide 100 by 15, we get 6 and a remainder of 10.
The number 6 becomes the next digit in our result. 
Result so far: 1268414.466
If we take 90 away from 100, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

The final result is 1268414.466 with a remainder of 0.001.