396893 ÷ 15 
The aim is to understand the frequency of 15 in 396893.

Advancing to step 1:
The number 15 fits into 3 0 times, leaving a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Bring next digit (9) of the dividend behind the 3 and repeat the process: 39 / 15

Let's proceed to step 2:
39 divided by 15 is 2 with a remainder of 9.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
Subtract 30 from 39 to get 9.
Bring next digit (6) of the dividend behind the 9 and repeat the process: 96 / 15

Let's proceed to step 3:
When dividing 96 by 15, we get 6 with a remainder of 6.
Write down 6 as next digit of the result. 
Result so far: 26.0
If we subtract 90 from 96, we get 6.
Take the next digit (8) from the dividend and append it to 6, then repeat: 68 / 15

Step 4:
68 divided by 15 is 4 with a remainder of 8.
The next digit of our result is 4. 
Result so far: 264.0
The remainder is 8 after subtracting 60 from 68.
Bring next digit (9) of the dividend behind the 8 and repeat the process: 89 / 15

Moving on to step 5:
15 can be fit into 89 5 times, resulting in a remainder of 14.
Use 5 as the next digit of our solution. 
Result so far: 2645.0
Subtract 75 from 89 to get 14.
Grab the next digit (3) from the dividend, add it to 14, then carry on: 143 / 15

On to step 6:
143 divided by 15 is 9 with a remainder of 8.
The next digit of our result is 9. 
Result so far: 26459.0
If we take 135 away from 143, 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.

Advancing to step 7:
15 goes into 80 5 times with a remainder of 5.
The number 5 becomes the next digit in our result. 
Result so far: 26459.5
Subtracting 75 from 80 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.

Going ahead to step 8:
15 goes into 50 3 times with a remainder of 5.
Put 3 as the next digit of the answer. 
Result so far: 26459.53
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.

On to step 9:
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: 26459.533
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.

After the division, we end up with 26459.533 and a remainder of 0.0005.