823519 ÷ 75 
The aim is to understand the frequency of 75 in 823519.

On to step 1:
75 goes into 8 0 times with a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Take the next digit (2) from the dividend and append it to 8, then repeat: 82 / 75

Going ahead to step 2:
If we divide 82 by 75, we get 1 and a remainder of 7.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Deduct 75 from 82 and we're left with 7.
Fetch the next digit (3) from the dividend, attach it to 7 and continue: 73 / 75

Going ahead to step 3:
75 goes into 73 0 times with a remainder of 73.
Record the quotient 0 as the next digit in the result. 
Result so far: 10.0
The remainder is 73 after subtracting 0 from 73.
Append the next digit (5) from the dividend to 73 and continue with: 735 / 75

Moving on to step 4:
75 goes into 735 9 times with a remainder of 60.
Put 9 as the next digit of the answer. 
Result so far: 109.0
Subtract 675 from 735 to get 60.
Append the next digit (1) from the dividend to 60 and continue with: 601 / 75

Moving on to step 5:
601 divided by 75 is 8 with a remainder of 1.
Put 8 as the next digit of the answer. 
Result so far: 1098.0
The remainder is 1 after subtracting 600 from 601.
Bring next digit (9) of the dividend behind the 1 and repeat the process: 19 / 75

Let's proceed to step 6:
75 can be fit into 19 0 times, resulting in a remainder of 19.
Use 0 as the next digit of our solution. 
Result so far: 10980.0
Subtracting 0 from 19 leaves us with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Moving on to step 7:
When dividing 190 by 75, we get 2 with a remainder of 40.
The next digit of our result is 2. 
Result so far: 10980.2
The remainder is 40 after subtracting 150 from 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Going ahead to step 8:
400 divided by 75 is 5 with a remainder of 25.
The number 5 becomes the next digit in our result. 
Result so far: 10980.25
If we take 375 away from 400, we end up with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Step 9:
75 goes into 250 3 times with a remainder of 25.
The next digit of our result is 3. 
Result so far: 10980.253
Subtract 225 from 250 to get 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Advancing to step 10:
When dividing 250 by 75, we get 3 with a remainder of 25.
The number 3 becomes the next digit in our result. 
Result so far: 10980.2533
Subtract 225 from 250 to get 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

The final result is 10980.2533 with a remainder of 0.00025.