Let's divide 578309 by 75
The aim is to understand the frequency of 75 in 578309.

Moving on to step 1:
The number 75 fits into 5 0 times, leaving a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Append the next digit (7) from the dividend to 5 and continue with: 57 / 75

On to step 2:
75 can be fit into 57 0 times, resulting in a remainder of 57.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 57 leaves us with 57.
Bring next digit (8) of the dividend behind the 57 and repeat the process: 578 / 75

Going ahead to step 3:
578 divided by 75 is 7 with a remainder of 53.
Record the quotient 7 as the next digit in the result. 
Result so far: 7.0
Subtracting 525 from 578 leaves us with 53.
Include the next digit (3) from the dividend after 53, then repeat: 533 / 75

Going ahead to step 4:
533 divided by 75 is 7 with a remainder of 8.
Put 7 as the next digit of the answer. 
Result so far: 77.0
Subtracting 525 from 533 leaves us with 8.
Grab the next digit (0) from the dividend, add it to 8, then carry on: 80 / 75

On to step 5:
80 divided by 75 is 1 with a remainder of 5.
Use 1 as the next digit of our solution. 
Result so far: 771.0
The remainder is 5 after subtracting 75 from 80.
Include the next digit (9) from the dividend after 5, then repeat: 59 / 75

Let's proceed to step 6:
The number 75 fits into 59 0 times, leaving a remainder of 59.
Record the quotient 0 as the next digit in the result. 
Result so far: 7710.0
If we take 0 away from 59, we end up with 59.
Since there are no more digits in the dividend, we add a zero to the remainder making it 590, and continue the process.

Moving on to step 7:
The number 75 fits into 590 7 times, leaving a remainder of 65.
Record the quotient 7 as the next digit in the result. 
Result so far: 7710.7
If we take 525 away from 590, we end up with 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

Moving on to step 8:
75 goes into 650 8 times with a remainder of 50.
The next digit of our result is 8. 
Result so far: 7710.78
If we subtract 600 from 650, we get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Going ahead to step 9:
75 goes into 500 6 times with a remainder of 50.
The number 6 becomes the next digit in our result. 
Result so far: 7710.786
Deduct 450 from 500 and we're left 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.

On to step 10:
When dividing 500 by 75, we get 6 with a remainder of 50.
The number 6 becomes the next digit in our result. 
Result so far: 7710.7866
Subtract 450 from 500 to get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

In conclusion, the division gives 7710.7866 with a balance of 0.0005.