Let's divide 839923 by 30
The aim is to understand the frequency of 30 in 839923.

On to step 1:
The number 30 fits into 8 0 times, leaving a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Append the next digit (3) from the dividend to 8 and continue with: 83 / 30

Let's proceed to step 2:
30 goes into 83 2 times with a remainder of 23.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
If we take 60 away from 83, we end up with 23.
Fetch the next digit (9) from the dividend, attach it to 23 and continue: 239 / 30

Going ahead to step 3:
30 can be fit into 239 7 times, resulting in a remainder of 29.
Write down 7 as next digit of the result. 
Result so far: 27.0
The remainder is 29 after subtracting 210 from 239.
Take the next digit (9) from the dividend and append it to 29, then repeat: 299 / 30

On to step 4:
The number 30 fits into 299 9 times, leaving a remainder of 29.
The next digit of our result is 9. 
Result so far: 279.0
Deduct 270 from 299 and we're left with 29.
Grab the next digit (2) from the dividend, add it to 29, then carry on: 292 / 30

Let's proceed to step 5:
When dividing 292 by 30, we get 9 with a remainder of 22.
Write down 9 as next digit of the result. 
Result so far: 2799.0
Deduct 270 from 292 and we're left with 22.
Bring next digit (3) of the dividend behind the 22 and repeat the process: 223 / 30

Advancing to step 6:
If we divide 223 by 30, we get 7 and a remainder of 13.
Put 7 as the next digit of the answer. 
Result so far: 27997.0
If we take 210 away from 223, we end up with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Let's proceed to step 7:
When dividing 130 by 30, we get 4 with a remainder of 10.
Record the quotient 4 as the next digit in the result. 
Result so far: 27997.4
Deduct 120 from 130 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 8:
The number 30 fits into 100 3 times, leaving a remainder of 10.
The number 3 becomes the next digit in our result. 
Result so far: 27997.43
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.

Moving on to step 9:
When dividing 100 by 30, we get 3 with a remainder of 10.
Write down 3 as next digit of the result. 
Result so far: 27997.433
If we take 90 away from 100, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

In conclusion, the division gives 27997.433 with a balance of 0.001.