We're dividing 604875 by 15 
The aim is to understand the frequency of 15 in 604875.

Let's proceed to step 1:
The number 15 fits into 6 0 times, leaving a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Grab the next digit (0) from the dividend, add it to 6, then carry on: 60 / 15

Advancing to step 2:
The number 15 fits into 60 4 times, leaving a remainder of 0.
The next digit of our result is 4. 
Result so far: 4.0
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

Moving on to step 3:
15 can be fit into 4 0 times, resulting in a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 40.0
The remainder is 4 after subtracting 0 from 4.
Append the next digit (8) from the dividend to 4 and continue with: 48 / 15

Going ahead to step 4:
15 goes into 48 3 times with a remainder of 3.
Write down 3 as next digit of the result. 
Result so far: 403.0
Subtracting 45 from 48 leaves us with 3.
Grab the next digit (7) from the dividend, add it to 3, then carry on: 37 / 15

On to step 5:
When dividing 37 by 15, we get 2 with a remainder of 7.
Use 2 as the next digit of our solution. 
Result so far: 4032.0
The remainder is 7 after subtracting 30 from 37.
Bring next digit (5) of the dividend behind the 7 and repeat the process: 75 / 15

Step 6:
15 goes into 75 5 times with a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 40325.0
Subtract 75 from 75 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 7:
15 goes into 0 0 times with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 40325.0
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 8:
15 goes into 0 0 times with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 40325.0
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The quotient of the division is 40325.0, and the remainder is 0.0.