We're dividing 885188 by 15 
The aim is to understand the frequency of 15 in 885188.

Going ahead to step 1:
The number 15 fits into 8 0 times, leaving a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Append the next digit (8) from the dividend to 8 and continue with: 88 / 15

Going ahead to step 2:
88 divided by 15 is 5 with a remainder of 13.
Write down 5 as next digit of the result. 
Result so far: 5.0
Subtracting 75 from 88 leaves us with 13.
Append the next digit (5) from the dividend to 13 and continue with: 135 / 15

Moving on to step 3:
15 can be fit into 135 9 times, resulting in a remainder of 0.
The number 9 becomes the next digit in our result. 
Result so far: 59.0
If we subtract 135 from 135, we get 0.
Fetch the next digit (1) from the dividend, attach it to 0 and continue: 1 / 15

On to step 4:
15 can be fit into 1 0 times, resulting in a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 590.0
Deduct 0 from 1 and we're left with 1.
Take the next digit (8) from the dividend and append it to 1, then repeat: 18 / 15

Let's proceed to step 5:
18 divided by 15 is 1 with a remainder of 3.
Use 1 as the next digit of our solution. 
Result so far: 5901.0
Subtracting 15 from 18 leaves us with 3.
Bring next digit (8) of the dividend behind the 3 and repeat the process: 38 / 15

Advancing to step 6:
The number 15 fits into 38 2 times, leaving a remainder of 8.
The number 2 becomes the next digit in our result. 
Result so far: 59012.0
The remainder is 8 after subtracting 30 from 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Advancing to step 7:
The number 15 fits into 80 5 times, leaving a remainder of 5.
The number 5 becomes the next digit in our result. 
Result so far: 59012.5
The remainder is 5 after subtracting 75 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Step 8:
15 goes into 50 3 times with a remainder of 5.
The next digit of our result is 3. 
Result so far: 59012.53
Deduct 45 from 50 and we're left 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.

Step 9:
50 divided by 15 is 3 with a remainder of 5.
Use 3 as the next digit of our solution. 
Result so far: 59012.533
If we subtract 45 from 50, we 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.

The final result is 59012.533 with a remainder of 0.0005.