We divide 842359 by 15
The aim is to understand the frequency of 15 in 842359.

Step 1:
8 divided by 15 is 0 with a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Append the next digit (4) from the dividend to 8 and continue with: 84 / 15

Advancing to step 2:
15 can be fit into 84 5 times, resulting in a remainder of 9.
Put 5 as the next digit of the answer. 
Result so far: 5.0
If we take 75 away from 84, we end up with 9.
Fetch the next digit (2) from the dividend, attach it to 9 and continue: 92 / 15

Advancing to step 3:
15 can be fit into 92 6 times, resulting in a remainder of 2.
The number 6 becomes the next digit in our result. 
Result so far: 56.0
Subtract 90 from 92 to get 2.
Take the next digit (3) from the dividend and append it to 2, then repeat: 23 / 15

On to step 4:
15 can be fit into 23 1 times, resulting in a remainder of 8.
The number 1 becomes the next digit in our result. 
Result so far: 561.0
If we subtract 15 from 23, we get 8.
Include the next digit (5) from the dividend after 8, then repeat: 85 / 15

Let's proceed to step 5:
The number 15 fits into 85 5 times, leaving a remainder of 10.
Put 5 as the next digit of the answer. 
Result so far: 5615.0
The remainder is 10 after subtracting 75 from 85.
Include the next digit (9) from the dividend after 10, then repeat: 109 / 15

Step 6:
109 divided by 15 is 7 with a remainder of 4.
The next digit of our result is 7. 
Result so far: 56157.0
Subtracting 105 from 109 leaves us with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Step 7:
The number 15 fits into 40 2 times, leaving a remainder of 10.
Write down 2 as next digit of the result. 
Result so far: 56157.2
Subtract 30 from 40 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Moving on to step 8:
The number 15 fits into 100 6 times, leaving a remainder of 10.
Record the quotient 6 as the next digit in the result. 
Result so far: 56157.26
Deduct 90 from 100 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Moving on to step 9:
If we divide 100 by 15, we get 6 and a remainder of 10.
The next digit of our result is 6. 
Result so far: 56157.266
The remainder is 10 after subtracting 90 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

The final result is 56157.266 with a remainder of 0.001.