Let's divide 291520 by 15
The aim is to understand the frequency of 15 in 291520.

Moving on to step 1:
2 divided by 15 is 0 with a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Take the next digit (9) from the dividend and append it to 2, then repeat: 29 / 15

Moving on to step 2:
If we divide 29 by 15, we get 1 and a remainder of 14.
Put 1 as the next digit of the answer. 
Result so far: 1.0
The remainder is 14 after subtracting 15 from 29.
Include the next digit (1) from the dividend after 14, then repeat: 141 / 15

Advancing to step 3:
15 goes into 141 9 times with a remainder of 6.
The next digit of our result is 9. 
Result so far: 19.0
If we subtract 135 from 141, we get 6.
Append the next digit (5) from the dividend to 6 and continue with: 65 / 15

Going ahead to step 4:
15 goes into 65 4 times with a remainder of 5.
The number 4 becomes the next digit in our result. 
Result so far: 194.0
If we subtract 60 from 65, we get 5.
Include the next digit (2) from the dividend after 5, then repeat: 52 / 15

Step 5:
The number 15 fits into 52 3 times, leaving a remainder of 7.
The number 3 becomes the next digit in our result. 
Result so far: 1943.0
Subtract 45 from 52 to get 7.
Append the next digit (0) from the dividend to 7 and continue with: 70 / 15

Moving on to step 6:
70 divided by 15 is 4 with a remainder of 10.
The number 4 becomes the next digit in our result. 
Result so far: 19434.0
The remainder is 10 after subtracting 60 from 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 7:
100 divided by 15 is 6 with a remainder of 10.
The next digit of our result is 6. 
Result so far: 19434.6
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.

Advancing to step 8:
100 divided by 15 is 6 with a remainder of 10.
Put 6 as the next digit of the answer. 
Result so far: 19434.66
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 result is 19434.66 with a remainder of 0.01.