We're dividing 217913 by 9 
The aim is to understand the frequency of 9 in 217913.

Step 1:
If we divide 2 by 9, we get 0 and a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Append the next digit (1) from the dividend to 2 and continue with: 21 / 9

Advancing to step 2:
9 can be fit into 21 2 times, resulting in a remainder of 3.
Write down 2 as next digit of the result. 
Result so far: 2.0
Deduct 18 from 21 and we're left with 3.
Fetch the next digit (7) from the dividend, attach it to 3 and continue: 37 / 9

Step 3:
When dividing 37 by 9, we get 4 with a remainder of 1.
The next digit of our result is 4. 
Result so far: 24.0
If we take 36 away from 37, we end up with 1.
Append the next digit (9) from the dividend to 1 and continue with: 19 / 9

Step 4:
If we divide 19 by 9, we get 2 and a remainder of 1.
Use 2 as the next digit of our solution. 
Result so far: 242.0
The remainder is 1 after subtracting 18 from 19.
Take the next digit (1) from the dividend and append it to 1, then repeat: 11 / 9

Step 5:
9 can be fit into 11 1 times, resulting in a remainder of 2.
Put 1 as the next digit of the answer. 
Result so far: 2421.0
Deduct 9 from 11 and we're left with 2.
Append the next digit (3) from the dividend to 2 and continue with: 23 / 9

Moving on to step 6:
9 goes into 23 2 times with a remainder of 5.
Use 2 as the next digit of our solution. 
Result so far: 24212.0
Subtracting 18 from 23 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.

On to step 7:
When dividing 50 by 9, we get 5 with a remainder of 5.
Use 5 as the next digit of our solution. 
Result so far: 24212.5
If we take 45 away from 50, we end up 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.

Moving on to step 8:
The number 9 fits into 50 5 times, leaving a remainder of 5.
Record the quotient 5 as the next digit in the result. 
Result so far: 24212.55
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.

The final result is 24212.55 with a remainder of 0.005.