522409 divided by 75 
The aim is to understand the frequency of 75 in 522409.

Advancing to step 1:
75 goes into 5 0 times with a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Include the next digit (2) from the dividend after 5, then repeat: 52 / 75

Moving on to step 2:
The number 75 fits into 52 0 times, leaving a remainder of 52.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 52, we get 52.
Take the next digit (2) from the dividend and append it to 52, then repeat: 522 / 75

Let's proceed to step 3:
If we divide 522 by 75, we get 6 and a remainder of 72.
Record the quotient 6 as the next digit in the result. 
Result so far: 6.0
Subtract 450 from 522 to get 72.
Take the next digit (4) from the dividend and append it to 72, then repeat: 724 / 75

Moving on to step 4:
The number 75 fits into 724 9 times, leaving a remainder of 49.
The next digit of our result is 9. 
Result so far: 69.0
If we take 675 away from 724, we end up with 49.
Include the next digit (0) from the dividend after 49, then repeat: 490 / 75

Let's proceed to step 5:
75 goes into 490 6 times with a remainder of 40.
The number 6 becomes the next digit in our result. 
Result so far: 696.0
Subtract 450 from 490 to get 40.
Take the next digit (9) from the dividend and append it to 40, then repeat: 409 / 75

Advancing to step 6:
When dividing 409 by 75, we get 5 with a remainder of 34.
The number 5 becomes the next digit in our result. 
Result so far: 6965.0
If we subtract 375 from 409, we get 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

On to step 7:
The number 75 fits into 340 4 times, leaving a remainder of 40.
Write down 4 as next digit of the result. 
Result so far: 6965.4
If we take 300 away from 340, we end up with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

On to step 8:
The number 75 fits into 400 5 times, leaving a remainder of 25.
Put 5 as the next digit of the answer. 
Result so far: 6965.45
Deduct 375 from 400 and we're left 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.

On to step 9:
The number 75 fits into 250 3 times, leaving a remainder of 25.
The number 3 becomes the next digit in our result. 
Result so far: 6965.453
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:
The number 75 fits into 250 3 times, leaving a remainder of 25.
Put 3 as the next digit of the answer. 
Result so far: 6965.4533
If we take 225 away from 250, 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.

Our division results in 6965.4533 with a remaining 0.00025.