478830 ÷ 20 
Let's see how many times 20 fits into 478830.

Going ahead to step 1:
When dividing 4 by 20, we get 0 with a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 4, we get 4.
Include the next digit (7) from the dividend after 4, then repeat: 47 / 20

Advancing to step 2:
When dividing 47 by 20, we get 2 with a remainder of 7.
The next digit of our result is 2. 
Result so far: 2.0
If we take 40 away from 47, we end up with 7.
Fetch the next digit (8) from the dividend, attach it to 7 and continue: 78 / 20

Going ahead to step 3:
20 goes into 78 3 times with a remainder of 18.
Put 3 as the next digit of the answer. 
Result so far: 23.0
If we subtract 60 from 78, we get 18.
Include the next digit (8) from the dividend after 18, then repeat: 188 / 20

Step 4:
When dividing 188 by 20, we get 9 with a remainder of 8.
The number 9 becomes the next digit in our result. 
Result so far: 239.0
If we subtract 180 from 188, we get 8.
Fetch the next digit (3) from the dividend, attach it to 8 and continue: 83 / 20

Advancing to step 5:
20 goes into 83 4 times with a remainder of 3.
Record the quotient 4 as the next digit in the result. 
Result so far: 2394.0
Subtract 80 from 83 to get 3.
Include the next digit (0) from the dividend after 3, then repeat: 30 / 20

Moving on to step 6:
The number 20 fits into 30 1 times, leaving a remainder of 10.
Record the quotient 1 as the next digit in the result. 
Result so far: 23941.0
Subtract 20 from 30 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 7:
If we divide 100 by 20, we get 5 and a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 23941.5
The remainder is 0 after subtracting 100 from 100.
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:
When dividing 0 by 20, we get 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 23941.5
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.

On to step 9:
When dividing 0 by 20, we get 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 23941.5
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 23941.5 with a balance of 0.0.