387619 divided by 15 
The aim is to understand the frequency of 15 in 387619.

Moving on to step 1:
15 goes into 3 0 times with a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Grab the next digit (8) from the dividend, add it to 3, then carry on: 38 / 15

Going ahead to step 2:
When dividing 38 by 15, we get 2 with a remainder of 8.
Put 2 as the next digit of the answer. 
Result so far: 2.0
If we subtract 30 from 38, we get 8.
Fetch the next digit (7) from the dividend, attach it to 8 and continue: 87 / 15

Step 3:
87 divided by 15 is 5 with a remainder of 12.
The number 5 becomes the next digit in our result. 
Result so far: 25.0
Deduct 75 from 87 and we're left with 12.
Bring next digit (6) of the dividend behind the 12 and repeat the process: 126 / 15

Let's proceed to step 4:
126 divided by 15 is 8 with a remainder of 6.
Write down 8 as next digit of the result. 
Result so far: 258.0
If we take 120 away from 126, we end up with 6.
Grab the next digit (1) from the dividend, add it to 6, then carry on: 61 / 15

Advancing to step 5:
15 can be fit into 61 4 times, resulting in a remainder of 1.
Write down 4 as next digit of the result. 
Result so far: 2584.0
If we subtract 60 from 61, we get 1.
Include the next digit (9) from the dividend after 1, then repeat: 19 / 15

Step 6:
The number 15 fits into 19 1 times, leaving a remainder of 4.
Write down 1 as next digit of the result. 
Result so far: 25841.0
Subtract 15 from 19 to 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.

Let's proceed to step 7:
The number 15 fits into 40 2 times, leaving a remainder of 10.
Put 2 as the next digit of the answer. 
Result so far: 25841.2
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.

Step 8:
If we divide 100 by 15, we get 6 and a remainder of 10.
Write down 6 as next digit of the result. 
Result so far: 25841.26
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.

Let's proceed to step 9:
100 divided by 15 is 6 with a remainder of 10.
The next digit of our result is 6. 
Result so far: 25841.266
The remainder is 10 after subtracting 90 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

After the division, we end up with 25841.266 and a remainder of 0.001.