Let's divide 290990 by 15
The aim is to understand the frequency of 15 in 290990.

Moving on to step 1:
The number 15 fits into 2 0 times, leaving a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Include the next digit (9) from the dividend after 2, then repeat: 29 / 15

Let's proceed to step 2:
When dividing 29 by 15, we get 1 with a remainder of 14.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
The remainder is 14 after subtracting 15 from 29.
Fetch the next digit (0) from the dividend, attach it to 14 and continue: 140 / 15

Advancing to step 3:
The number 15 fits into 140 9 times, leaving a remainder of 5.
The next digit of our result is 9. 
Result so far: 19.0
Subtracting 135 from 140 leaves us with 5.
Grab the next digit (9) from the dividend, add it to 5, then carry on: 59 / 15

Let's proceed to step 4:
15 can be fit into 59 3 times, resulting in a remainder of 14.
The number 3 becomes the next digit in our result. 
Result so far: 193.0
Subtracting 45 from 59 leaves us with 14.
Append the next digit (9) from the dividend to 14 and continue with: 149 / 15

Step 5:
149 divided by 15 is 9 with a remainder of 14.
Use 9 as the next digit of our solution. 
Result so far: 1939.0
The remainder is 14 after subtracting 135 from 149.
Fetch the next digit (0) from the dividend, attach it to 14 and continue: 140 / 15

Moving on to step 6:
The number 15 fits into 140 9 times, leaving a remainder of 5.
The number 9 becomes the next digit in our result. 
Result so far: 19399.0
Subtracting 135 from 140 leaves us 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.

Let's proceed to step 7:
50 divided by 15 is 3 with a remainder of 5.
Use 3 as the next digit of our solution. 
Result so far: 19399.3
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.

On to step 8:
The number 15 fits into 50 3 times, leaving a remainder of 5.
Put 3 as the next digit of the answer. 
Result so far: 19399.33
Subtract 45 from 50 to 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.

After the division, we end up with 19399.33 and a remainder of 0.005.