Let's divide 312020 by 20
Let's see how many times 20 fits into 312020.

Step 1:
The number 20 fits into 3 0 times, leaving a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Fetch the next digit (1) from the dividend, attach it to 3 and continue: 31 / 20

On to step 2:
The number 20 fits into 31 1 times, leaving a remainder of 11.
The next digit of our result is 1. 
Result so far: 1.0
The remainder is 11 after subtracting 20 from 31.
Include the next digit (2) from the dividend after 11, then repeat: 112 / 20

On to step 3:
The number 20 fits into 112 5 times, leaving a remainder of 12.
Write down 5 as next digit of the result. 
Result so far: 15.0
The remainder is 12 after subtracting 100 from 112.
Bring next digit (0) of the dividend behind the 12 and repeat the process: 120 / 20

Moving on to step 4:
120 divided by 20 is 6 with a remainder of 0.
Write down 6 as next digit of the result. 
Result so far: 156.0
Subtract 120 from 120 to get 0.
Include the next digit (2) from the dividend after 0, then repeat: 2 / 20

Advancing to step 5:
20 goes into 2 0 times with a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 1560.0
The remainder is 2 after subtracting 0 from 2.
Take the next digit (0) from the dividend and append it to 2, then repeat: 20 / 20

Moving on to step 6:
20 divided by 20 is 1 with a remainder of 0.
Use 1 as the next digit of our solution. 
Result so far: 15601.0
Subtract 20 from 20 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.

Step 7:
0 divided by 20 is 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 15601.0
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.

Advancing to step 8:
20 goes into 0 0 times with a remainder of 0.
The next digit of our result is 0. 
Result so far: 15601.0
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 15601.0 with a balance of 0.0.