We divide 654869 by 15
The aim is to understand the frequency of 15 in 654869.

Moving on to step 1:
If we divide 6 by 15, we get 0 and a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Append the next digit (5) from the dividend to 6 and continue with: 65 / 15

On to step 2:
The number 15 fits into 65 4 times, leaving a remainder of 5.
Put 4 as the next digit of the answer. 
Result so far: 4.0
Deduct 60 from 65 and we're left with 5.
Grab the next digit (4) from the dividend, add it to 5, then carry on: 54 / 15

Step 3:
The number 15 fits into 54 3 times, leaving a remainder of 9.
The next digit of our result is 3. 
Result so far: 43.0
Subtracting 45 from 54 leaves us with 9.
Take the next digit (8) from the dividend and append it to 9, then repeat: 98 / 15

Step 4:
The number 15 fits into 98 6 times, leaving a remainder of 8.
Use 6 as the next digit of our solution. 
Result so far: 436.0
If we subtract 90 from 98, we get 8.
Append the next digit (6) from the dividend to 8 and continue with: 86 / 15

Moving on to step 5:
15 goes into 86 5 times with a remainder of 11.
The next digit of our result is 5. 
Result so far: 4365.0
If we subtract 75 from 86, we get 11.
Grab the next digit (9) from the dividend, add it to 11, then carry on: 119 / 15

Going ahead to step 6:
15 goes into 119 7 times with a remainder of 14.
The number 7 becomes the next digit in our result. 
Result so far: 43657.0
Deduct 105 from 119 and we're left with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Let's proceed to step 7:
The number 15 fits into 140 9 times, leaving a remainder of 5.
Use 9 as the next digit of our solution. 
Result so far: 43657.9
Deduct 135 from 140 and we're left 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:
If we divide 50 by 15, we get 3 and a remainder of 5.
Record the quotient 3 as the next digit in the result. 
Result so far: 43657.93
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.

Going ahead to step 9:
15 goes into 50 3 times with a remainder of 5.
The next digit of our result is 3. 
Result so far: 43657.933
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.

The final outcome is 43657.933, with a leftover of 0.0005.