Let's divide 390310 by 20
We want to divide 390310 by 20.

Advancing to step 1:
20 can be fit into 3 0 times, resulting in a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Fetch the next digit (9) from the dividend, attach it to 3 and continue: 39 / 20

Step 2:
20 goes into 39 1 times with a remainder of 19.
The next digit of our result is 1. 
Result so far: 1.0
Subtracting 20 from 39 leaves us with 19.
Take the next digit (0) from the dividend and append it to 19, then repeat: 190 / 20

Moving on to step 3:
20 can be fit into 190 9 times, resulting in a remainder of 10.
Write down 9 as next digit of the result. 
Result so far: 19.0
The remainder is 10 after subtracting 180 from 190.
Append the next digit (3) from the dividend to 10 and continue with: 103 / 20

Moving on to step 4:
If we divide 103 by 20, we get 5 and a remainder of 3.
The number 5 becomes the next digit in our result. 
Result so far: 195.0
Subtracting 100 from 103 leaves us with 3.
Append the next digit (1) from the dividend to 3 and continue with: 31 / 20

Going ahead to step 5:
31 divided by 20 is 1 with a remainder of 11.
Write down 1 as next digit of the result. 
Result so far: 1951.0
If we subtract 20 from 31, we get 11.
Fetch the next digit (0) from the dividend, attach it to 11 and continue: 110 / 20

Let's proceed to step 6:
110 divided by 20 is 5 with a remainder of 10.
Record the quotient 5 as the next digit in the result. 
Result so far: 19515.0
If we take 100 away from 110, 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.

Let's proceed to step 7:
20 can be fit into 100 5 times, resulting in a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 19515.5
Subtract 100 from 100 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.

Moving on to step 8:
0 divided by 20 is 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 19515.5
If we take 0 away from 0, 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.

Advancing to step 9:
The number 20 fits into 0 0 times, leaving a remainder of 0.
The next digit of our result is 0. 
Result so far: 19515.5
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.

In conclusion, the division gives 19515.5 with a balance of 0.0.