We're dividing 304315 by 66 
The aim is to understand the frequency of 66 in 304315.

Advancing to step 1:
66 can be fit into 3 0 times, resulting in a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Include the next digit (0) from the dividend after 3, then repeat: 30 / 66

Going ahead to step 2:
The number 66 fits into 30 0 times, leaving a remainder of 30.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 30, we end up with 30.
Append the next digit (4) from the dividend to 30 and continue with: 304 / 66

Step 3:
If we divide 304 by 66, we get 4 and a remainder of 40.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
If we take 264 away from 304, we end up with 40.
Fetch the next digit (3) from the dividend, attach it to 40 and continue: 403 / 66

Step 4:
The number 66 fits into 403 6 times, leaving a remainder of 7.
Write down 6 as next digit of the result. 
Result so far: 46.0
If we take 396 away from 403, we end up with 7.
Grab the next digit (1) from the dividend, add it to 7, then carry on: 71 / 66

Advancing to step 5:
71 divided by 66 is 1 with a remainder of 5.
Record the quotient 1 as the next digit in the result. 
Result so far: 461.0
Subtract 66 from 71 to get 5.
Fetch the next digit (5) from the dividend, attach it to 5 and continue: 55 / 66

Step 6:
55 divided by 66 is 0 with a remainder of 55.
Put 0 as the next digit of the answer. 
Result so far: 4610.0
Subtracting 0 from 55 leaves us with 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

On to step 7:
66 goes into 550 8 times with a remainder of 22.
The number 8 becomes the next digit in our result. 
Result so far: 4610.8
Deduct 528 from 550 and we're left with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Going ahead to step 8:
220 divided by 66 is 3 with a remainder of 22.
Put 3 as the next digit of the answer. 
Result so far: 4610.83
If we take 198 away from 220, we end up with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Going ahead to step 9:
220 divided by 66 is 3 with a remainder of 22.
Use 3 as the next digit of our solution. 
Result so far: 4610.833
Deduct 198 from 220 and we're left with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

After the division, we end up with 4610.833 and a remainder of 0.0022.