141939 ÷ 30 
The aim is to understand the frequency of 30 in 141939.

Moving on to step 1:
1 divided by 30 is 0 with a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Bring next digit (4) of the dividend behind the 1 and repeat the process: 14 / 30

On to step 2:
14 divided by 30 is 0 with a remainder of 14.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 14 leaves us with 14.
Take the next digit (1) from the dividend and append it to 14, then repeat: 141 / 30

Advancing to step 3:
If we divide 141 by 30, we get 4 and a remainder of 21.
The next digit of our result is 4. 
Result so far: 4.0
Deduct 120 from 141 and we're left with 21.
Include the next digit (9) from the dividend after 21, then repeat: 219 / 30

Let's proceed to step 4:
30 can be fit into 219 7 times, resulting in a remainder of 9.
Write down 7 as next digit of the result. 
Result so far: 47.0
Subtracting 210 from 219 leaves us with 9.
Take the next digit (3) from the dividend and append it to 9, then repeat: 93 / 30

Let's proceed to step 5:
93 divided by 30 is 3 with a remainder of 3.
Use 3 as the next digit of our solution. 
Result so far: 473.0
The remainder is 3 after subtracting 90 from 93.
Take the next digit (9) from the dividend and append it to 3, then repeat: 39 / 30

Advancing to step 6:
The number 30 fits into 39 1 times, leaving a remainder of 9.
Record the quotient 1 as the next digit in the result. 
Result so far: 4731.0
If we subtract 30 from 39, we get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

On to step 7:
90 divided by 30 is 3 with a remainder of 0.
The number 3 becomes the next digit in our result. 
Result so far: 4731.3
If we take 90 away from 90, we end up 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 8:
30 goes into 0 0 times with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 4731.3
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.

Advancing to step 9:
30 goes into 0 0 times with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 4731.3
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.

Our division results in 4731.3 with a remaining 0.0.