Let's divide 284648 by 15
The aim is to understand the frequency of 15 in 284648.

On to step 1:
15 goes into 2 0 times with a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Fetch the next digit (8) from the dividend, attach it to 2 and continue: 28 / 15

Moving on to step 2:
28 divided by 15 is 1 with a remainder of 13.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Deduct 15 from 28 and we're left with 13.
Bring next digit (4) of the dividend behind the 13 and repeat the process: 134 / 15

Step 3:
134 divided by 15 is 8 with a remainder of 14.
Use 8 as the next digit of our solution. 
Result so far: 18.0
Subtracting 120 from 134 leaves us with 14.
Append the next digit (6) from the dividend to 14 and continue with: 146 / 15

Going ahead to step 4:
When dividing 146 by 15, we get 9 with a remainder of 11.
Use 9 as the next digit of our solution. 
Result so far: 189.0
If we take 135 away from 146, we end up with 11.
Append the next digit (4) from the dividend to 11 and continue with: 114 / 15

Advancing to step 5:
The number 15 fits into 114 7 times, leaving a remainder of 9.
Record the quotient 7 as the next digit in the result. 
Result so far: 1897.0
If we subtract 105 from 114, we get 9.
Bring next digit (8) of the dividend behind the 9 and repeat the process: 98 / 15

Advancing to step 6:
The number 15 fits into 98 6 times, leaving a remainder of 8.
Use 6 as the next digit of our solution. 
Result so far: 18976.0
If we take 90 away from 98, we end up with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Let's proceed to step 7:
80 divided by 15 is 5 with a remainder of 5.
Record the quotient 5 as the next digit in the result. 
Result so far: 18976.5
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.

Going ahead to step 8:
15 can be fit into 50 3 times, resulting in a remainder of 5.
Record the quotient 3 as the next digit in the result. 
Result so far: 18976.53
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.

Step 9:
If we divide 50 by 15, we get 3 and a remainder of 5.
The next digit of our result is 3. 
Result so far: 18976.533
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 18976.533 with a remainder of 0.0005.