We're dividing 573244 by 15 
The aim is to understand the frequency of 15 in 573244.

Let's proceed to step 1:
When dividing 5 by 15, we get 0 with a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Fetch the next digit (7) from the dividend, attach it to 5 and continue: 57 / 15

Step 2:
15 can be fit into 57 3 times, resulting in a remainder of 12.
The next digit of our result is 3. 
Result so far: 3.0
If we subtract 45 from 57, we get 12.
Include the next digit (3) from the dividend after 12, then repeat: 123 / 15

On to step 3:
123 divided by 15 is 8 with a remainder of 3.
Put 8 as the next digit of the answer. 
Result so far: 38.0
Subtract 120 from 123 to get 3.
Include the next digit (2) from the dividend after 3, then repeat: 32 / 15

Advancing to step 4:
The number 15 fits into 32 2 times, leaving a remainder of 2.
Write down 2 as next digit of the result. 
Result so far: 382.0
The remainder is 2 after subtracting 30 from 32.
Take the next digit (4) from the dividend and append it to 2, then repeat: 24 / 15

On to step 5:
15 goes into 24 1 times with a remainder of 9.
Use 1 as the next digit of our solution. 
Result so far: 3821.0
If we take 15 away from 24, we end up with 9.
Bring next digit (4) of the dividend behind the 9 and repeat the process: 94 / 15

Let's proceed to step 6:
The number 15 fits into 94 6 times, leaving a remainder of 4.
Record the quotient 6 as the next digit in the result. 
Result so far: 38216.0
If we subtract 90 from 94, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Advancing to step 7:
When dividing 40 by 15, we get 2 with a remainder of 10.
Record the quotient 2 as the next digit in the result. 
Result so far: 38216.2
If we subtract 30 from 40, 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.

Going ahead to step 8:
The number 15 fits into 100 6 times, leaving a remainder of 10.
The next digit of our result is 6. 
Result so far: 38216.26
Deduct 90 from 100 and we're left 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.

Going ahead to step 9:
The number 15 fits into 100 6 times, leaving a remainder of 10.
Put 6 as the next digit of the answer. 
Result so far: 38216.266
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.

Our division results in 38216.266 with a remaining 0.001.