66345 ÷ 30 
The aim is to understand the frequency of 30 in 66345.

Step 1:
The number 30 fits into 6 0 times, leaving a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Fetch the next digit (6) from the dividend, attach it to 6 and continue: 66 / 30

Step 2:
30 can be fit into 66 2 times, resulting in a remainder of 6.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
If we subtract 60 from 66, we get 6.
Fetch the next digit (3) from the dividend, attach it to 6 and continue: 63 / 30

Moving on to step 3:
30 goes into 63 2 times with a remainder of 3.
Record the quotient 2 as the next digit in the result. 
Result so far: 22.0
Deduct 60 from 63 and we're left with 3.
Grab the next digit (4) from the dividend, add it to 3, then carry on: 34 / 30

Going ahead to step 4:
When dividing 34 by 30, we get 1 with a remainder of 4.
Put 1 as the next digit of the answer. 
Result so far: 221.0
Deduct 30 from 34 and we're left with 4.
Bring next digit (5) of the dividend behind the 4 and repeat the process: 45 / 30

Going ahead to step 5:
30 can be fit into 45 1 times, resulting in a remainder of 15.
The number 1 becomes the next digit in our result. 
Result so far: 2211.0
Subtracting 30 from 45 leaves us with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Step 6:
If we divide 150 by 30, we get 5 and a remainder of 0.
The next digit of our result is 5. 
Result so far: 2211.5
Deduct 150 from 150 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 7:
30 can be fit into 0 0 times, resulting in a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 2211.5
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 8:
When dividing 0 by 30, we get 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 2211.5
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final result is 2211.5 with a remainder of 0.0.