186563 ÷ 15 
The aim is to understand the frequency of 15 in 186563.

Step 1:
15 can be fit into 1 0 times, resulting in a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Include the next digit (8) from the dividend after 1, then repeat: 18 / 15

On to step 2:
15 can be fit into 18 1 times, resulting in a remainder of 3.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we take 15 away from 18, we end up with 3.
Bring next digit (6) of the dividend behind the 3 and repeat the process: 36 / 15

Let's proceed to step 3:
If we divide 36 by 15, we get 2 and a remainder of 6.
Write down 2 as next digit of the result. 
Result so far: 12.0
If we subtract 30 from 36, we get 6.
Append the next digit (5) from the dividend to 6 and continue with: 65 / 15

Advancing to step 4:
The number 15 fits into 65 4 times, leaving a remainder of 5.
Write down 4 as next digit of the result. 
Result so far: 124.0
If we subtract 60 from 65, we get 5.
Grab the next digit (6) from the dividend, add it to 5, then carry on: 56 / 15

On to step 5:
15 goes into 56 3 times with a remainder of 11.
Record the quotient 3 as the next digit in the result. 
Result so far: 1243.0
Deduct 45 from 56 and we're left with 11.
Append the next digit (3) from the dividend to 11 and continue with: 113 / 15

Step 6:
If we divide 113 by 15, we get 7 and a remainder of 8.
Write down 7 as next digit of the result. 
Result so far: 12437.0
If we subtract 105 from 113, we get 8.
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:
80 divided by 15 is 5 with a remainder of 5.
The number 5 becomes the next digit in our result. 
Result so far: 12437.5
If we take 75 away from 80, we end up 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.

On to step 8:
The number 15 fits into 50 3 times, leaving a remainder of 5.
The number 3 becomes the next digit in our result. 
Result so far: 12437.53
The remainder is 5 after subtracting 45 from 50.
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 9:
The number 15 fits into 50 3 times, leaving a remainder of 5.
Put 3 as the next digit of the answer. 
Result so far: 12437.533
If we take 45 away from 50, we end up 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.

In conclusion, the division gives 12437.533 with a balance of 0.0005.