Let's divide 288602 by 15
The aim is to understand the frequency of 15 in 288602.

Let's proceed to step 1:
15 can be fit into 2 0 times, resulting in a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Include the next digit (8) from the dividend after 2, then repeat: 28 / 15

Moving on to step 2:
If we divide 28 by 15, we get 1 and a remainder of 13.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we take 15 away from 28, we end up with 13.
Include the next digit (8) from the dividend after 13, then repeat: 138 / 15

Let's proceed to step 3:
138 divided by 15 is 9 with a remainder of 3.
Record the quotient 9 as the next digit in the result. 
Result so far: 19.0
The remainder is 3 after subtracting 135 from 138.
Bring next digit (6) of the dividend behind the 3 and repeat the process: 36 / 15

On to step 4:
If we divide 36 by 15, we get 2 and a remainder of 6.
The next digit of our result is 2. 
Result so far: 192.0
If we subtract 30 from 36, we get 6.
Append the next digit (0) from the dividend to 6 and continue with: 60 / 15

On to step 5:
If we divide 60 by 15, we get 4 and a remainder of 0.
Use 4 as the next digit of our solution. 
Result so far: 1924.0
Subtracting 60 from 60 leaves us with 0.
Take the next digit (2) from the dividend and append it to 0, then repeat: 2 / 15

Going ahead to step 6:
2 divided by 15 is 0 with a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 19240.0
Deduct 0 from 2 and we're left with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 7:
15 can be fit into 20 1 times, resulting in a remainder of 5.
Use 1 as the next digit of our solution. 
Result so far: 19240.1
If we take 15 away from 20, 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.

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: 19240.13
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.

Moving on to step 9:
When dividing 50 by 15, we get 3 with a remainder of 5.
The next digit of our result is 3. 
Result so far: 19240.133
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.

Our division results in 19240.133 with a remaining 0.0005.