Let's divide 99780899 by 20
Let's see how many times 20 fits into 99780899.

Step 1:
9 divided by 20 is 0 with a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 9, we get 9.
Append the next digit (9) from the dividend to 9 and continue with: 99 / 20

Let's proceed to step 2:
If we divide 99 by 20, we get 4 and a remainder of 19.
The next digit of our result is 4. 
Result so far: 4.0
Subtract 80 from 99 to get 19.
Take the next digit (7) from the dividend and append it to 19, then repeat: 197 / 20

Going ahead to step 3:
If we divide 197 by 20, we get 9 and a remainder of 17.
Use 9 as the next digit of our solution. 
Result so far: 49.0
Subtract 180 from 197 to get 17.
Include the next digit (8) from the dividend after 17, then repeat: 178 / 20

Let's proceed to step 4:
When dividing 178 by 20, we get 8 with a remainder of 18.
Write down 8 as next digit of the result. 
Result so far: 498.0
Subtract 160 from 178 to get 18.
Bring next digit (0) of the dividend behind the 18 and repeat the process: 180 / 20

Going ahead to step 5:
When dividing 180 by 20, we get 9 with a remainder of 0.
The next digit of our result is 9. 
Result so far: 4989.0
If we take 180 away from 180, we end up with 0.
Include the next digit (8) from the dividend after 0, then repeat: 8 / 20

Advancing to step 6:
The number 20 fits into 8 0 times, leaving a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 49890.0
Subtracting 0 from 8 leaves us with 8.
Bring next digit (9) of the dividend behind the 8 and repeat the process: 89 / 20

Let's proceed to step 7:
If we divide 89 by 20, we get 4 and a remainder of 9.
The number 4 becomes the next digit in our result. 
Result so far: 498904.0
Subtract 80 from 89 to get 9.
Bring next digit (9) of the dividend behind the 9 and repeat the process: 99 / 20

Moving on to step 8:
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: 4989044.0
Deduct 80 from 99 and we're left 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.

On to step 9:
190 divided by 20 is 9 with a remainder of 10.
Put 9 as the next digit of the answer. 
Result so far: 4989044.9
The remainder is 10 after subtracting 180 from 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 10:
20 can be fit into 100 5 times, resulting in a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 4989044.95
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.

Step 11:
20 can be fit into 0 0 times, resulting in a remainder of 0.
The next digit of our result is 0. 
Result so far: 4989044.95
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.

Going ahead to step 12:
20 goes into 0 0 times with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 4989044.95
Deduct 0 from 0 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.

In conclusion, the division gives 4989044.95 with a balance of 0.0.