We divide 904790 by 20
Let's see how many times 20 fits into 904790.

Step 1:
When dividing 9 by 20, we get 0 with a remainder of 9.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 9 to get 9.
Append the next digit (0) from the dividend to 9 and continue with: 90 / 20

Let's proceed to step 2:
When dividing 90 by 20, we get 4 with a remainder of 10.
Use 4 as the next digit of our solution. 
Result so far: 4.0
The remainder is 10 after subtracting 80 from 90.
Bring next digit (4) of the dividend behind the 10 and repeat the process: 104 / 20

Going ahead to step 3:
If we divide 104 by 20, we get 5 and a remainder of 4.
Use 5 as the next digit of our solution. 
Result so far: 45.0
Deduct 100 from 104 and we're left with 4.
Take the next digit (7) from the dividend and append it to 4, then repeat: 47 / 20

Going ahead to step 4:
20 can be fit into 47 2 times, resulting in a remainder of 7.
The next digit of our result is 2. 
Result so far: 452.0
Subtract 40 from 47 to get 7.
Append the next digit (9) from the dividend to 7 and continue with: 79 / 20

Moving on to step 5:
If we divide 79 by 20, we get 3 and a remainder of 19.
Put 3 as the next digit of the answer. 
Result so far: 4523.0
Subtract 60 from 79 to get 19.
Include the next digit (0) from the dividend after 19, then repeat: 190 / 20

Step 6:
If we divide 190 by 20, we get 9 and a remainder of 10.
The number 9 becomes the next digit in our result. 
Result so far: 45239.0
Subtract 180 from 190 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.

Moving on to step 7:
When dividing 100 by 20, we get 5 with a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 45239.5
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.

Going ahead to step 8:
When dividing 0 by 20, we get 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 45239.5
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 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: 45239.5
If we subtract 0 from 0, we 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.

In conclusion, the division gives 45239.5 with a balance of 0.0.