Let's divide 88775 by 15
The aim is to understand the frequency of 15 in 88775.

On to step 1:
15 can be fit into 8 0 times, resulting in a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Take the next digit (8) from the dividend and append it to 8, then repeat: 88 / 15

Step 2:
If we divide 88 by 15, we get 5 and a remainder of 13.
Write down 5 as next digit of the result. 
Result so far: 5.0
Deduct 75 from 88 and we're left with 13.
Grab the next digit (7) from the dividend, add it to 13, then carry on: 137 / 15

On to step 3:
15 goes into 137 9 times with a remainder of 2.
Use 9 as the next digit of our solution. 
Result so far: 59.0
Subtracting 135 from 137 leaves us with 2.
Fetch the next digit (7) from the dividend, attach it to 2 and continue: 27 / 15

Advancing to step 4:
If we divide 27 by 15, we get 1 and a remainder of 12.
The number 1 becomes the next digit in our result. 
Result so far: 591.0
The remainder is 12 after subtracting 15 from 27.
Take the next digit (5) from the dividend and append it to 12, then repeat: 125 / 15

Moving on to step 5:
When dividing 125 by 15, we get 8 with a remainder of 5.
The next digit of our result is 8. 
Result so far: 5918.0
Subtract 120 from 125 to get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Going ahead to step 6:
The number 15 fits into 50 3 times, leaving a remainder of 5.
Write down 3 as next digit of the result. 
Result so far: 5918.3
Subtract 45 from 50 to get 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 7:
15 can be fit into 50 3 times, resulting in a remainder of 5.
Write down 3 as next digit of the result. 
Result so far: 5918.33
Subtracting 45 from 50 leaves us 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 5918.33 with a remainder of 0.005.