939742 divided by 20 
The aim is to understand the frequency of 20 in 939742.

Let's proceed to step 1:
If we divide 9 by 20, we get 0 and a remainder of 9.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 9 and we're left with 9.
Grab the next digit (3) from the dividend, add it to 9, then carry on: 93 / 20

Step 2:
93 divided by 20 is 4 with a remainder of 13.
Use 4 as the next digit of our solution. 
Result so far: 4.0
Subtracting 80 from 93 leaves us with 13.
Append the next digit (9) from the dividend to 13 and continue with: 139 / 20

Moving on to step 3:
If we divide 139 by 20, we get 6 and a remainder of 19.
Put 6 as the next digit of the answer. 
Result so far: 46.0
The remainder is 19 after subtracting 120 from 139.
Take the next digit (7) from the dividend and append it to 19, then repeat: 197 / 20

Advancing to step 4:
197 divided by 20 is 9 with a remainder of 17.
The number 9 becomes the next digit in our result. 
Result so far: 469.0
If we take 180 away from 197, we end up with 17.
Append the next digit (4) from the dividend to 17 and continue with: 174 / 20

On to step 5:
20 goes into 174 8 times with a remainder of 14.
Put 8 as the next digit of the answer. 
Result so far: 4698.0
The remainder is 14 after subtracting 160 from 174.
Grab the next digit (2) from the dividend, add it to 14, then carry on: 142 / 20

Advancing to step 6:
20 can be fit into 142 7 times, resulting in a remainder of 2.
Write down 7 as next digit of the result. 
Result so far: 46987.0
If we take 140 away from 142, we end up with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Step 7:
The number 20 fits into 20 1 times, leaving a remainder of 0.
Use 1 as the next digit of our solution. 
Result so far: 46987.1
Subtracting 20 from 20 leaves us 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.

Let's proceed to step 8:
The number 20 fits into 0 0 times, leaving a remainder of 0.
The next digit of our result is 0. 
Result so far: 46987.1
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 9:
The number 20 fits into 0 0 times, leaving a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 46987.1
Subtracting 0 from 0 leaves us 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.

In conclusion, the division gives 46987.1 with a balance of 0.0.