We're dividing 238869 by 15 
The aim is to understand the frequency of 15 in 238869.

Step 1:
The number 15 fits into 2 0 times, leaving a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Grab the next digit (3) from the dividend, add it to 2, then carry on: 23 / 15

Moving on to step 2:
23 divided by 15 is 1 with a remainder of 8.
The next digit of our result is 1. 
Result so far: 1.0
Subtract 15 from 23 to get 8.
Fetch the next digit (8) from the dividend, attach it to 8 and continue: 88 / 15

On to step 3:
The number 15 fits into 88 5 times, leaving a remainder of 13.
The next digit of our result is 5. 
Result so far: 15.0
If we take 75 away from 88, we end up with 13.
Append the next digit (8) from the dividend to 13 and continue with: 138 / 15

Moving on to step 4:
138 divided by 15 is 9 with a remainder of 3.
The next digit of our result is 9. 
Result so far: 159.0
If we take 135 away from 138, we end up with 3.
Include the next digit (6) from the dividend after 3, then repeat: 36 / 15

Moving on to step 5:
The number 15 fits into 36 2 times, leaving a remainder of 6.
The next digit of our result is 2. 
Result so far: 1592.0
If we subtract 30 from 36, we get 6.
Grab the next digit (9) from the dividend, add it to 6, then carry on: 69 / 15

Advancing to step 6:
When dividing 69 by 15, we get 4 with a remainder of 9.
Put 4 as the next digit of the answer. 
Result so far: 15924.0
Deduct 60 from 69 and we're left with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Let's proceed to step 7:
15 goes into 90 6 times with a remainder of 0.
Use 6 as the next digit of our solution. 
Result so far: 15924.6
The remainder is 0 after subtracting 90 from 90.
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:
The number 15 fits into 0 0 times, leaving a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 15924.6
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.

Let's proceed to step 9:
When dividing 0 by 15, we get 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 15924.6
Subtracting 0 from 0 leaves us 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.

Our division results in 15924.6 with a remaining 0.0.