20909954 ÷ 904 
We want to divide 20909954 by 904.

Step 1:
The number 904 fits into 2 0 times, leaving a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Append the next digit (0) from the dividend to 2 and continue with: 20 / 904

Step 2:
The number 904 fits into 20 0 times, leaving a remainder of 20.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 20 leaves us with 20.
Grab the next digit (9) from the dividend, add it to 20, then carry on: 209 / 904

Let's proceed to step 3:
When dividing 209 by 904, we get 0 with a remainder of 209.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 209 leaves us with 209.
Fetch the next digit (0) from the dividend, attach it to 209 and continue: 2090 / 904

Going ahead to step 4:
When dividing 2090 by 904, we get 2 with a remainder of 282.
Put 2 as the next digit of the answer. 
Result so far: 2.0
If we take 1808 away from 2090, we end up with 282.
Fetch the next digit (9) from the dividend, attach it to 282 and continue: 2829 / 904

Going ahead to step 5:
If we divide 2829 by 904, we get 3 and a remainder of 117.
Record the quotient 3 as the next digit in the result. 
Result so far: 23.0
Deduct 2712 from 2829 and we're left with 117.
Append the next digit (9) from the dividend to 117 and continue with: 1179 / 904

Going ahead to step 6:
If we divide 1179 by 904, we get 1 and a remainder of 275.
The number 1 becomes the next digit in our result. 
Result so far: 231.0
Deduct 904 from 1179 and we're left with 275.
Include the next digit (5) from the dividend after 275, then repeat: 2755 / 904

Step 7:
If we divide 2755 by 904, we get 3 and a remainder of 43.
The next digit of our result is 3. 
Result so far: 2313.0
If we take 2712 away from 2755, we end up with 43.
Grab the next digit (4) from the dividend, add it to 43, then carry on: 434 / 904

Step 8:
When dividing 434 by 904, we get 0 with a remainder of 434.
Write down 0 as next digit of the result. 
Result so far: 23130.0
Subtract 0 from 434 to get 434.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4340, and continue the process.

Step 9:
The number 904 fits into 4340 4 times, leaving a remainder of 724.
Record the quotient 4 as the next digit in the result. 
Result so far: 23130.4
The remainder is 724 after subtracting 3616 from 4340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7240, and continue the process.

Going ahead to step 10:
7240 divided by 904 is 8 with a remainder of 8.
Put 8 as the next digit of the answer. 
Result so far: 23130.48
Deduct 7232 from 7240 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Going ahead to step 11:
If we divide 80 by 904, we get 0 and a remainder of 80.
Write down 0 as next digit of the result. 
Result so far: 23130.48
If we subtract 0 from 80, we get 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Advancing to step 12:
The number 904 fits into 800 0 times, leaving a remainder of 800.
Write down 0 as next digit of the result. 
Result so far: 23130.48
Deduct 0 from 800 and we're left with 800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8000, and continue the process.

The final outcome is 23130.48, with a leftover of 0.008.