We look at the division of 523942 by 20 
We want to divide 523942 by 20.

Step 1:
5 divided by 20 is 0 with a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Take the next digit (2) from the dividend and append it to 5, then repeat: 52 / 20

On to step 2:
The number 20 fits into 52 2 times, leaving a remainder of 12.
Put 2 as the next digit of the answer. 
Result so far: 2.0
The remainder is 12 after subtracting 40 from 52.
Bring next digit (3) of the dividend behind the 12 and repeat the process: 123 / 20

Let's proceed to step 3:
20 goes into 123 6 times with a remainder of 3.
The number 6 becomes the next digit in our result. 
Result so far: 26.0
If we take 120 away from 123, we end up with 3.
Take the next digit (9) from the dividend and append it to 3, then repeat: 39 / 20

Moving on to step 4:
20 goes into 39 1 times with a remainder of 19.
The next digit of our result is 1. 
Result so far: 261.0
If we subtract 20 from 39, we get 19.
Fetch the next digit (4) from the dividend, attach it to 19 and continue: 194 / 20

Step 5:
If we divide 194 by 20, we get 9 and a remainder of 14.
The number 9 becomes the next digit in our result. 
Result so far: 2619.0
Subtract 180 from 194 to get 14.
Fetch the next digit (2) from the dividend, attach it to 14 and continue: 142 / 20

On to step 6:
The number 20 fits into 142 7 times, leaving a remainder of 2.
Put 7 as the next digit of the answer. 
Result so far: 26197.0
The remainder is 2 after subtracting 140 from 142.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Advancing to step 7:
20 divided by 20 is 1 with a remainder of 0.
Write down 1 as next digit of the result. 
Result so far: 26197.1
If we take 20 away from 20, 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.

Let's proceed to step 8:
0 divided by 20 is 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 26197.1
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.

Moving on to step 9:
The number 20 fits into 0 0 times, leaving a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 26197.1
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 26197.1 with a balance of 0.0.