Let's divide 405246 by 30
The aim is to understand the frequency of 30 in 405246.

Advancing to step 1:
4 divided by 30 is 0 with a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Take the next digit (0) from the dividend and append it to 4, then repeat: 40 / 30

Advancing to step 2:
30 can be fit into 40 1 times, resulting in a remainder of 10.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we take 30 away from 40, we end up with 10.
Bring next digit (5) of the dividend behind the 10 and repeat the process: 105 / 30

Moving on to step 3:
The number 30 fits into 105 3 times, leaving a remainder of 15.
Write down 3 as next digit of the result. 
Result so far: 13.0
Deduct 90 from 105 and we're left with 15.
Grab the next digit (2) from the dividend, add it to 15, then carry on: 152 / 30

On to step 4:
30 goes into 152 5 times with a remainder of 2.
The next digit of our result is 5. 
Result so far: 135.0
Subtract 150 from 152 to get 2.
Append the next digit (4) from the dividend to 2 and continue with: 24 / 30

Moving on to step 5:
If we divide 24 by 30, we get 0 and a remainder of 24.
Write down 0 as next digit of the result. 
Result so far: 1350.0
If we subtract 0 from 24, we get 24.
Bring next digit (6) of the dividend behind the 24 and repeat the process: 246 / 30

Advancing to step 6:
30 can be fit into 246 8 times, resulting in a remainder of 6.
Put 8 as the next digit of the answer. 
Result so far: 13508.0
If we subtract 240 from 246, we get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Let's proceed to step 7:
If we divide 60 by 30, we get 2 and a remainder of 0.
Write down 2 as next digit of the result. 
Result so far: 13508.2
Subtract 60 from 60 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:
The number 30 fits into 0 0 times, leaving a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 13508.2
Deduct 0 from 0 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.

Step 9:
30 can be fit into 0 0 times, resulting in a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 13508.2
Deduct 0 from 0 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.

After the division, we end up with 13508.2 and a remainder of 0.0.