20198987 ÷ 206 
Let's see how many times 206 fits into 20198987.

Advancing to step 1:
When dividing 2 by 206, we get 0 with a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Take the next digit (0) from the dividend and append it to 2, then repeat: 20 / 206

Moving on to step 2:
The number 206 fits into 20 0 times, leaving a remainder of 20.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 20, we get 20.
Take the next digit (1) from the dividend and append it to 20, then repeat: 201 / 206

Advancing to step 3:
The number 206 fits into 201 0 times, leaving a remainder of 201.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 201 after subtracting 0 from 201.
Fetch the next digit (9) from the dividend, attach it to 201 and continue: 2019 / 206

Advancing to step 4:
If we divide 2019 by 206, we get 9 and a remainder of 165.
The next digit of our result is 9. 
Result so far: 9.0
If we subtract 1854 from 2019, we get 165.
Bring next digit (8) of the dividend behind the 165 and repeat the process: 1658 / 206

Step 5:
206 can be fit into 1658 8 times, resulting in a remainder of 10.
Write down 8 as next digit of the result. 
Result so far: 98.0
Deduct 1648 from 1658 and we're left with 10.
Take the next digit (9) from the dividend and append it to 10, then repeat: 109 / 206

Let's proceed to step 6:
If we divide 109 by 206, we get 0 and a remainder of 109.
Write down 0 as next digit of the result. 
Result so far: 980.0
Subtracting 0 from 109 leaves us with 109.
Grab the next digit (8) from the dividend, add it to 109, then carry on: 1098 / 206

Advancing to step 7:
When dividing 1098 by 206, we get 5 with a remainder of 68.
The number 5 becomes the next digit in our result. 
Result so far: 9805.0
If we subtract 1030 from 1098, we get 68.
Grab the next digit (7) from the dividend, add it to 68, then carry on: 687 / 206

Going ahead to step 8:
If we divide 687 by 206, we get 3 and a remainder of 69.
Use 3 as the next digit of our solution. 
Result so far: 98053.0
Subtract 618 from 687 to get 69.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

Let's proceed to step 9:
690 divided by 206 is 3 with a remainder of 72.
The number 3 becomes the next digit in our result. 
Result so far: 98053.3
Subtracting 618 from 690 leaves us with 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Moving on to step 10:
If we divide 720 by 206, we get 3 and a remainder of 102.
Record the quotient 3 as the next digit in the result. 
Result so far: 98053.33
Subtracting 618 from 720 leaves us with 102.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1020, and continue the process.

The final outcome is 98053.33, with a leftover of 0.102.