Let's divide 21933388 by 250
The aim is to understand the frequency of 250 in 21933388.

On to step 1:
2 divided by 250 is 0 with a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Fetch the next digit (1) from the dividend, attach it to 2 and continue: 21 / 250

Advancing to step 2:
250 goes into 21 0 times with a remainder of 21.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 21 and we're left with 21.
Fetch the next digit (9) from the dividend, attach it to 21 and continue: 219 / 250

Advancing to step 3:
When dividing 219 by 250, we get 0 with a remainder of 219.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 219, we end up with 219.
Grab the next digit (3) from the dividend, add it to 219, then carry on: 2193 / 250

On to step 4:
250 goes into 2193 8 times with a remainder of 193.
Write down 8 as next digit of the result. 
Result so far: 8.0
Deduct 2000 from 2193 and we're left with 193.
Take the next digit (3) from the dividend and append it to 193, then repeat: 1933 / 250

Let's proceed to step 5:
If we divide 1933 by 250, we get 7 and a remainder of 183.
Write down 7 as next digit of the result. 
Result so far: 87.0
Subtracting 1750 from 1933 leaves us with 183.
Fetch the next digit (3) from the dividend, attach it to 183 and continue: 1833 / 250

Moving on to step 6:
250 goes into 1833 7 times with a remainder of 83.
The number 7 becomes the next digit in our result. 
Result so far: 877.0
Deduct 1750 from 1833 and we're left with 83.
Include the next digit (8) from the dividend after 83, then repeat: 838 / 250

Going ahead to step 7:
250 can be fit into 838 3 times, resulting in a remainder of 88.
The next digit of our result is 3. 
Result so far: 8773.0
Deduct 750 from 838 and we're left with 88.
Include the next digit (8) from the dividend after 88, then repeat: 888 / 250

Going ahead to step 8:
250 can be fit into 888 3 times, resulting in a remainder of 138.
The next digit of our result is 3. 
Result so far: 87733.0
If we take 750 away from 888, we end up with 138.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1380, and continue the process.

Let's proceed to step 9:
When dividing 1380 by 250, we get 5 with a remainder of 130.
Use 5 as the next digit of our solution. 
Result so far: 87733.5
The remainder is 130 after subtracting 1250 from 1380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1300, and continue the process.

On to step 10:
If we divide 1300 by 250, we get 5 and a remainder of 50.
Put 5 as the next digit of the answer. 
Result so far: 87733.55
Subtracting 1250 from 1300 leaves us with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

The final outcome is 87733.55, with a leftover of 0.05.