We're dividing 804829 by 15 
The aim is to understand the frequency of 15 in 804829.

Step 1:
8 divided by 15 is 0 with a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Fetch the next digit (0) from the dividend, attach it to 8 and continue: 80 / 15

Going ahead to step 2:
15 goes into 80 5 times with a remainder of 5.
Use 5 as the next digit of our solution. 
Result so far: 5.0
Subtract 75 from 80 to get 5.
Bring next digit (4) of the dividend behind the 5 and repeat the process: 54 / 15

Moving on to step 3:
If we divide 54 by 15, we get 3 and a remainder of 9.
Put 3 as the next digit of the answer. 
Result so far: 53.0
If we take 45 away from 54, we end up with 9.
Grab the next digit (8) from the dividend, add it to 9, then carry on: 98 / 15

Going ahead to step 4:
98 divided by 15 is 6 with a remainder of 8.
Put 6 as the next digit of the answer. 
Result so far: 536.0
If we subtract 90 from 98, we get 8.
Grab the next digit (2) from the dividend, add it to 8, then carry on: 82 / 15

Going ahead to step 5:
15 goes into 82 5 times with a remainder of 7.
The next digit of our result is 5. 
Result so far: 5365.0
Deduct 75 from 82 and we're left with 7.
Bring next digit (9) of the dividend behind the 7 and repeat the process: 79 / 15

Step 6:
The number 15 fits into 79 5 times, leaving a remainder of 4.
Write down 5 as next digit of the result. 
Result so far: 53655.0
Subtracting 75 from 79 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.

Advancing to step 7:
15 can be fit into 40 2 times, resulting in a remainder of 10.
Put 2 as the next digit of the answer. 
Result so far: 53655.2
If we take 30 away from 40, we end up 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.

Step 8:
15 goes into 100 6 times with a remainder of 10.
Record the quotient 6 as the next digit in the result. 
Result so far: 53655.26
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:
15 goes into 100 6 times with a remainder of 10.
Use 6 as the next digit of our solution. 
Result so far: 53655.266
Subtracting 90 from 100 leaves us 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.

The final outcome is 53655.266, with a leftover of 0.001.