We look at the division of 632285 by 15 
The aim is to understand the frequency of 15 in 632285.

Let's proceed to step 1:
The number 15 fits into 6 0 times, leaving a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Bring next digit (3) of the dividend behind the 6 and repeat the process: 63 / 15

Advancing to step 2:
If we divide 63 by 15, we get 4 and a remainder of 3.
The next digit of our result is 4. 
Result so far: 4.0
Subtract 60 from 63 to get 3.
Append the next digit (2) from the dividend to 3 and continue with: 32 / 15

On to step 3:
15 goes into 32 2 times with a remainder of 2.
Write down 2 as next digit of the result. 
Result so far: 42.0
Deduct 30 from 32 and we're left with 2.
Fetch the next digit (2) from the dividend, attach it to 2 and continue: 22 / 15

On to step 4:
22 divided by 15 is 1 with a remainder of 7.
The number 1 becomes the next digit in our result. 
Result so far: 421.0
Subtract 15 from 22 to get 7.
Bring next digit (8) of the dividend behind the 7 and repeat the process: 78 / 15

Advancing to step 5:
When dividing 78 by 15, we get 5 with a remainder of 3.
Record the quotient 5 as the next digit in the result. 
Result so far: 4215.0
Deduct 75 from 78 and we're left with 3.
Take the next digit (5) from the dividend and append it to 3, then repeat: 35 / 15

Moving on to step 6:
35 divided by 15 is 2 with a remainder of 5.
Use 2 as the next digit of our solution. 
Result so far: 42152.0
If we subtract 30 from 35, 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.

Moving on to step 7:
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: 42152.3
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.

Moving on to step 8:
When dividing 50 by 15, we get 3 with a remainder of 5.
The number 3 becomes the next digit in our result. 
Result so far: 42152.33
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.

Our division results in 42152.33 with a remaining 0.005.