We look at the division of 21996826 by 817 
The aim is to understand the frequency of 817 in 21996826.

Moving on to step 1:
When dividing 2 by 817, we get 0 with a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Fetch the next digit (1) from the dividend, attach it to 2 and continue: 21 / 817

Step 2:
If we divide 21 by 817, we get 0 and a remainder of 21.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 21, we end up with 21.
Grab the next digit (9) from the dividend, add it to 21, then carry on: 219 / 817

Step 3:
817 can be fit into 219 0 times, resulting in a remainder of 219.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 219 to get 219.
Bring next digit (9) of the dividend behind the 219 and repeat the process: 2199 / 817

Going ahead to step 4:
If we divide 2199 by 817, we get 2 and a remainder of 565.
Put 2 as the next digit of the answer. 
Result so far: 2.0
If we subtract 1634 from 2199, we get 565.
Grab the next digit (6) from the dividend, add it to 565, then carry on: 5656 / 817

Advancing to step 5:
The number 817 fits into 5656 6 times, leaving a remainder of 754.
The next digit of our result is 6. 
Result so far: 26.0
Deduct 4902 from 5656 and we're left with 754.
Include the next digit (8) from the dividend after 754, then repeat: 7548 / 817

Advancing to step 6:
817 goes into 7548 9 times with a remainder of 195.
Use 9 as the next digit of our solution. 
Result so far: 269.0
Subtract 7353 from 7548 to get 195.
Include the next digit (2) from the dividend after 195, then repeat: 1952 / 817

Advancing to step 7:
If we divide 1952 by 817, we get 2 and a remainder of 318.
Write down 2 as next digit of the result. 
Result so far: 2692.0
Subtract 1634 from 1952 to get 318.
Include the next digit (6) from the dividend after 318, then repeat: 3186 / 817

Moving on to step 8:
If we divide 3186 by 817, we get 3 and a remainder of 735.
Record the quotient 3 as the next digit in the result. 
Result so far: 26923.0
Deduct 2451 from 3186 and we're left with 735.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7350, and continue the process.

Moving on to step 9:
817 goes into 7350 8 times with a remainder of 814.
The next digit of our result is 8. 
Result so far: 26923.8
Subtracting 6536 from 7350 leaves us with 814.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8140, and continue the process.

Moving on to step 10:
8140 divided by 817 is 9 with a remainder of 787.
The next digit of our result is 9. 
Result so far: 26923.89
If we subtract 7353 from 8140, we get 787.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7870, and continue the process.

Step 11:
817 can be fit into 7870 9 times, resulting in a remainder of 517.
Use 9 as the next digit of our solution. 
Result so far: 26923.899
Deduct 7353 from 7870 and we're left with 517.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5170, and continue the process.

The final outcome is 26923.899, with a leftover of 0.0517.