441224 divided by 15 
The aim is to understand the frequency of 15 in 441224.

Step 1:
If we divide 4 by 15, we get 0 and a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 4, we get 4.
Take the next digit (4) from the dividend and append it to 4, then repeat: 44 / 15

Step 2:
44 divided by 15 is 2 with a remainder of 14.
Put 2 as the next digit of the answer. 
Result so far: 2.0
The remainder is 14 after subtracting 30 from 44.
Take the next digit (1) from the dividend and append it to 14, then repeat: 141 / 15

Advancing to step 3:
When dividing 141 by 15, we get 9 with a remainder of 6.
Record the quotient 9 as the next digit in the result. 
Result so far: 29.0
The remainder is 6 after subtracting 135 from 141.
Include the next digit (2) from the dividend after 6, then repeat: 62 / 15

Let's proceed to step 4:
The number 15 fits into 62 4 times, leaving a remainder of 2.
The next digit of our result is 4. 
Result so far: 294.0
Subtracting 60 from 62 leaves us with 2.
Take the next digit (2) from the dividend and append it to 2, then repeat: 22 / 15

Moving on to step 5:
When dividing 22 by 15, we get 1 with a remainder of 7.
Write down 1 as next digit of the result. 
Result so far: 2941.0
If we subtract 15 from 22, we get 7.
Grab the next digit (4) from the dividend, add it to 7, then carry on: 74 / 15

Step 6:
15 goes into 74 4 times with a remainder of 14.
The next digit of our result is 4. 
Result so far: 29414.0
If we take 60 away from 74, we end up with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Advancing to step 7:
140 divided by 15 is 9 with a remainder of 5.
The number 9 becomes the next digit in our result. 
Result so far: 29414.9
The remainder is 5 after subtracting 135 from 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Step 8:
50 divided by 15 is 3 with a remainder of 5.
The number 3 becomes the next digit in our result. 
Result so far: 29414.93
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.

Moving on to step 9:
If we divide 50 by 15, we get 3 and a remainder of 5.
Put 3 as the next digit of the answer. 
Result so far: 29414.933
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.

The final outcome is 29414.933, with a leftover of 0.0005.