502448 divided by 15 
The aim is to understand the frequency of 15 in 502448.

Advancing to step 1:
When dividing 5 by 15, we get 0 with a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Take the next digit (0) from the dividend and append it to 5, then repeat: 50 / 15

Advancing to step 2:
15 can be fit into 50 3 times, resulting in a remainder of 5.
The next digit of our result is 3. 
Result so far: 3.0
Subtract 45 from 50 to get 5.
Append the next digit (2) from the dividend to 5 and continue with: 52 / 15

Let's proceed to step 3:
52 divided by 15 is 3 with a remainder of 7.
The number 3 becomes the next digit in our result. 
Result so far: 33.0
Subtracting 45 from 52 leaves us with 7.
Fetch the next digit (4) from the dividend, attach it to 7 and continue: 74 / 15

Going ahead to step 4:
15 goes into 74 4 times with a remainder of 14.
Record the quotient 4 as the next digit in the result. 
Result so far: 334.0
Subtracting 60 from 74 leaves us with 14.
Bring next digit (4) of the dividend behind the 14 and repeat the process: 144 / 15

Let's proceed to step 5:
144 divided by 15 is 9 with a remainder of 9.
Use 9 as the next digit of our solution. 
Result so far: 3349.0
The remainder is 9 after subtracting 135 from 144.
Include the next digit (8) from the dividend after 9, then repeat: 98 / 15

Going ahead to step 6:
15 can be fit into 98 6 times, resulting in a remainder of 8.
Write down 6 as next digit of the result. 
Result so far: 33496.0
Subtracting 90 from 98 leaves us with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Let's proceed to step 7:
When dividing 80 by 15, we get 5 with a remainder of 5.
Record the quotient 5 as the next digit in the result. 
Result so far: 33496.5
If we take 75 away from 80, we end up 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:
The number 15 fits into 50 3 times, leaving a remainder of 5.
Record the quotient 3 as the next digit in the result. 
Result so far: 33496.53
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.

On to step 9:
50 divided by 15 is 3 with a remainder of 5.
Write down 3 as next digit of the result. 
Result so far: 33496.533
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 result is 33496.533 with a remainder of 0.0005.