852430 divided by 15 
The aim is to understand the frequency of 15 in 852430.

Step 1:
The number 15 fits into 8 0 times, leaving a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Grab the next digit (5) from the dividend, add it to 8, then carry on: 85 / 15

Going ahead to step 2:
If we divide 85 by 15, we get 5 and a remainder of 10.
The next digit of our result is 5. 
Result so far: 5.0
If we take 75 away from 85, we end up with 10.
Grab the next digit (2) from the dividend, add it to 10, then carry on: 102 / 15

Moving on to step 3:
15 can be fit into 102 6 times, resulting in a remainder of 12.
Put 6 as the next digit of the answer. 
Result so far: 56.0
The remainder is 12 after subtracting 90 from 102.
Append the next digit (4) from the dividend to 12 and continue with: 124 / 15

Advancing to step 4:
15 goes into 124 8 times with a remainder of 4.
Write down 8 as next digit of the result. 
Result so far: 568.0
Subtract 120 from 124 to get 4.
Append the next digit (3) from the dividend to 4 and continue with: 43 / 15

Advancing to step 5:
When dividing 43 by 15, we get 2 with a remainder of 13.
Record the quotient 2 as the next digit in the result. 
Result so far: 5682.0
Subtracting 30 from 43 leaves us with 13.
Fetch the next digit (0) from the dividend, attach it to 13 and continue: 130 / 15

On to step 6:
15 can be fit into 130 8 times, resulting in a remainder of 10.
The next digit of our result is 8. 
Result so far: 56828.0
Deduct 120 from 130 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.

Advancing to step 7:
15 can be fit into 100 6 times, resulting in a remainder of 10.
The next digit of our result is 6. 
Result so far: 56828.6
If we subtract 90 from 100, we 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.

Going ahead to step 8:
When dividing 100 by 15, we get 6 with a remainder of 10.
Write down 6 as next digit of the result. 
Result so far: 56828.66
Subtract 90 from 100 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.

The final outcome is 56828.66, with a leftover of 0.01.