534788 ÷ 15 
The aim is to understand the frequency of 15 in 534788.

Let's proceed to step 1:
When dividing 5 by 15, we get 0 with a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Bring next digit (3) of the dividend behind the 5 and repeat the process: 53 / 15

Going ahead to step 2:
15 can be fit into 53 3 times, resulting in a remainder of 8.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
If we take 45 away from 53, we end up with 8.
Fetch the next digit (4) from the dividend, attach it to 8 and continue: 84 / 15

Going ahead to step 3:
The number 15 fits into 84 5 times, leaving a remainder of 9.
Write down 5 as next digit of the result. 
Result so far: 35.0
Subtract 75 from 84 to get 9.
Bring next digit (7) of the dividend behind the 9 and repeat the process: 97 / 15

Let's proceed to step 4:
97 divided by 15 is 6 with a remainder of 7.
Put 6 as the next digit of the answer. 
Result so far: 356.0
The remainder is 7 after subtracting 90 from 97.
Bring next digit (8) of the dividend behind the 7 and repeat the process: 78 / 15

Advancing to step 5:
15 can be fit into 78 5 times, resulting in a remainder of 3.
Use 5 as the next digit of our solution. 
Result so far: 3565.0
The remainder is 3 after subtracting 75 from 78.
Append the next digit (8) from the dividend to 3 and continue with: 38 / 15

On to step 6:
If we divide 38 by 15, we get 2 and a remainder of 8.
The number 2 becomes the next digit in our result. 
Result so far: 35652.0
Subtracting 30 from 38 leaves us 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:
15 goes into 80 5 times with a remainder of 5.
Record the quotient 5 as the next digit in the result. 
Result so far: 35652.5
If we subtract 75 from 80, 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.

Going ahead to step 8:
15 goes into 50 3 times with a remainder of 5.
The next digit of our result is 3. 
Result so far: 35652.53
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.

Advancing to step 9:
If we divide 50 by 15, we get 3 and a remainder of 5.
Write down 3 as next digit of the result. 
Result so far: 35652.533
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 quotient of the division is 35652.533, and the remainder is 0.0005.