646207 ÷ 30 
The aim is to understand the frequency of 30 in 646207.

Step 1:
30 goes into 6 0 times with a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Append the next digit (4) from the dividend to 6 and continue with: 64 / 30

On to step 2:
30 can be fit into 64 2 times, resulting in a remainder of 4.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
Subtracting 60 from 64 leaves us with 4.
Fetch the next digit (6) from the dividend, attach it to 4 and continue: 46 / 30

Going ahead to step 3:
When dividing 46 by 30, we get 1 with a remainder of 16.
Write down 1 as next digit of the result. 
Result so far: 21.0
Subtract 30 from 46 to get 16.
Fetch the next digit (2) from the dividend, attach it to 16 and continue: 162 / 30

Advancing to step 4:
30 goes into 162 5 times with a remainder of 12.
Use 5 as the next digit of our solution. 
Result so far: 215.0
The remainder is 12 after subtracting 150 from 162.
Append the next digit (0) from the dividend to 12 and continue with: 120 / 30

Step 5:
30 goes into 120 4 times with a remainder of 0.
The number 4 becomes the next digit in our result. 
Result so far: 2154.0
If we subtract 120 from 120, we get 0.
Include the next digit (7) from the dividend after 0, then repeat: 7 / 30

Advancing to step 6:
30 goes into 7 0 times with a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 21540.0
Subtracting 0 from 7 leaves us with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Advancing to step 7:
70 divided by 30 is 2 with a remainder of 10.
Write down 2 as next digit of the result. 
Result so far: 21540.2
Subtract 60 from 70 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 8:
30 goes into 100 3 times with a remainder of 10.
Record the quotient 3 as the next digit in the result. 
Result so far: 21540.23
Subtract 90 from 100 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Let's proceed to step 9:
When dividing 100 by 30, we get 3 with a remainder of 10.
The next digit of our result is 3. 
Result so far: 21540.233
Subtract 90 from 100 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Our division results in 21540.233 with a remaining 0.001.