We divide 49990 by 20
We want to figure out the number of times 49990 can be divided by 20.

Moving on to step 1:
When dividing 4 by 20, we get 0 with a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Include the next digit (9) from the dividend after 4, then repeat: 49 / 20

Let's proceed to step 2:
20 goes into 49 2 times with a remainder of 9.
The next digit of our result is 2. 
Result so far: 2.0
If we take 40 away from 49, we end up with 9.
Grab the next digit (9) from the dividend, add it to 9, then carry on: 99 / 20

Step 3:
When dividing 99 by 20, we get 4 with a remainder of 19.
The number 4 becomes the next digit in our result. 
Result so far: 24.0
If we subtract 80 from 99, we get 19.
Take the next digit (9) from the dividend and append it to 19, then repeat: 199 / 20

Going ahead to step 4:
If we divide 199 by 20, we get 9 and a remainder of 19.
Write down 9 as next digit of the result. 
Result so far: 249.0
Subtract 180 from 199 to get 19.
Take the next digit (0) from the dividend and append it to 19, then repeat: 190 / 20

Going ahead to step 5:
When dividing 190 by 20, we get 9 with a remainder of 10.
Put 9 as the next digit of the answer. 
Result so far: 2499.0
Subtracting 180 from 190 leaves us 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.

Step 6:
20 can be fit into 100 5 times, resulting in a remainder of 0.
The next digit of our result is 5. 
Result so far: 2499.5
Deduct 100 from 100 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.

Step 7:
The number 20 fits into 0 0 times, leaving a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 2499.5
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.

Step 8:
The number 20 fits into 0 0 times, leaving a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 2499.5
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.

Our division results in 2499.5 with a remaining 0.0.