We look at the division of 98786991 by 20 
Our goal is to divide 98786991 by 20.

Advancing to step 1:
If we divide 9 by 20, we get 0 and 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.
Take the next digit (8) from the dividend and append it to 9, then repeat: 98 / 20

Going ahead to step 2:
20 can be fit into 98 4 times, resulting in a remainder of 18.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
If we subtract 80 from 98, we get 18.
Grab the next digit (7) from the dividend, add it to 18, then carry on: 187 / 20

On to step 3:
If we divide 187 by 20, we get 9 and a remainder of 7.
The number 9 becomes the next digit in our result. 
Result so far: 49.0
If we take 180 away from 187, we end up with 7.
Take the next digit (8) from the dividend and append it to 7, then repeat: 78 / 20

Going ahead to step 4:
When dividing 78 by 20, we get 3 with a remainder of 18.
The number 3 becomes the next digit in our result. 
Result so far: 493.0
Deduct 60 from 78 and we're left with 18.
Bring next digit (6) of the dividend behind the 18 and repeat the process: 186 / 20

Going ahead to step 5:
20 can be fit into 186 9 times, resulting in a remainder of 6.
Put 9 as the next digit of the answer. 
Result so far: 4939.0
Deduct 180 from 186 and we're left with 6.
Grab the next digit (9) from the dividend, add it to 6, then carry on: 69 / 20

On to step 6:
When dividing 69 by 20, we get 3 with a remainder of 9.
The number 3 becomes the next digit in our result. 
Result so far: 49393.0
If we take 60 away from 69, we end up with 9.
Take the next digit (9) from the dividend and append it to 9, then repeat: 99 / 20

Step 7:
20 goes into 99 4 times with a remainder of 19.
The number 4 becomes the next digit in our result. 
Result so far: 493934.0
Subtract 80 from 99 to get 19.
Fetch the next digit (1) from the dividend, attach it to 19 and continue: 191 / 20

Let's proceed to step 8:
When dividing 191 by 20, we get 9 with a remainder of 11.
Use 9 as the next digit of our solution. 
Result so far: 4939349.0
Deduct 180 from 191 and we're left with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Moving on to step 9:
110 divided by 20 is 5 with a remainder of 10.
Put 5 as the next digit of the answer. 
Result so far: 4939349.5
Deduct 100 from 110 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.

Step 10:
20 goes into 100 5 times with a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 4939349.55
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.

The final outcome is 4939349.55, with a leftover of 0.0.