666308 divided by 75 
The aim is to understand the frequency of 75 in 666308.

On to step 1:
75 goes into 6 0 times with a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Grab the next digit (6) from the dividend, add it to 6, then carry on: 66 / 75

Advancing to step 2:
66 divided by 75 is 0 with a remainder of 66.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 66 after subtracting 0 from 66.
Fetch the next digit (6) from the dividend, attach it to 66 and continue: 666 / 75

Step 3:
75 can be fit into 666 8 times, resulting in a remainder of 66.
Write down 8 as next digit of the result. 
Result so far: 8.0
If we take 600 away from 666, we end up with 66.
Grab the next digit (3) from the dividend, add it to 66, then carry on: 663 / 75

Going ahead to step 4:
75 goes into 663 8 times with a remainder of 63.
Use 8 as the next digit of our solution. 
Result so far: 88.0
If we take 600 away from 663, we end up with 63.
Bring next digit (0) of the dividend behind the 63 and repeat the process: 630 / 75

Let's proceed to step 5:
If we divide 630 by 75, we get 8 and a remainder of 30.
Record the quotient 8 as the next digit in the result. 
Result so far: 888.0
If we take 600 away from 630, we end up with 30.
Fetch the next digit (8) from the dividend, attach it to 30 and continue: 308 / 75

Advancing to step 6:
308 divided by 75 is 4 with a remainder of 8.
The number 4 becomes the next digit in our result. 
Result so far: 8884.0
If we subtract 300 from 308, we get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Let's proceed to step 7:
75 can be fit into 80 1 times, resulting in a remainder of 5.
Write down 1 as next digit of the result. 
Result so far: 8884.1
If we take 75 away from 80, we end up with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Step 8:
If we divide 50 by 75, we get 0 and a remainder of 50.
Use 0 as the next digit of our solution. 
Result so far: 8884.1
Deduct 0 from 50 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.

Moving on to step 9:
The number 75 fits into 500 6 times, leaving a remainder of 50.
The next digit of our result is 6. 
Result so far: 8884.106
The remainder is 50 after subtracting 450 from 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Step 10:
If we divide 500 by 75, we get 6 and a remainder of 50.
Put 6 as the next digit of the answer. 
Result so far: 8884.1066
If we take 450 away from 500, we end up 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 quotient of the division is 8884.1066, and the remainder is 0.0005.