904359 ÷ 20 
Let's see how many times 20 fits into 904359.

On to step 1:
20 goes into 9 0 times with a remainder of 9.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 9 leaves us with 9.
Append the next digit (0) from the dividend to 9 and continue with: 90 / 20

On to step 2:
The number 20 fits into 90 4 times, leaving a remainder of 10.
Write down 4 as next digit of the result. 
Result so far: 4.0
If we take 80 away from 90, we end up with 10.
Take the next digit (4) from the dividend and append it to 10, then repeat: 104 / 20

On 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.
Bring next digit (3) of the dividend behind the 4 and repeat the process: 43 / 20

Let's proceed to step 4:
20 goes into 43 2 times with a remainder of 3.
The number 2 becomes the next digit in our result. 
Result so far: 452.0
Deduct 40 from 43 and we're left with 3.
Take the next digit (5) from the dividend and append it to 3, then repeat: 35 / 20

Advancing to step 5:
20 goes into 35 1 times with a remainder of 15.
The next digit of our result is 1. 
Result so far: 4521.0
Subtract 20 from 35 to get 15.
Include the next digit (9) from the dividend after 15, then repeat: 159 / 20

Moving on to step 6:
20 goes into 159 7 times with a remainder of 19.
Write down 7 as next digit of the result. 
Result so far: 45217.0
If we take 140 away from 159, we end up with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Going ahead to step 7:
If we divide 190 by 20, we get 9 and a remainder of 10.
Write down 9 as next digit of the result. 
Result so far: 45217.9
Deduct 180 from 190 and we're left 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.

On to step 8:
20 can be fit into 100 5 times, resulting in a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 45217.95
If we take 100 away from 100, 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 9:
20 goes into 0 0 times with a remainder of 0.
The next digit of our result is 0. 
Result so far: 45217.95
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.

Moving on to step 10:
If we divide 0 by 20, we get 0 and a remainder of 0.
The next digit of our result is 0. 
Result so far: 45217.95
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.

After the division, we end up with 45217.95 and a remainder of 0.0.