We're dividing 18431 by 99 
Let's see how many times 99 fits into 18431.

Advancing to step 1:
1 divided by 99 is 0 with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Append the next digit (8) from the dividend to 1 and continue with: 18 / 99

Going ahead to step 2:
99 goes into 18 0 times with a remainder of 18.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 18 leaves us with 18.
Take the next digit (4) from the dividend and append it to 18, then repeat: 184 / 99

Moving on to step 3:
The number 99 fits into 184 1 times, leaving a remainder of 85.
Put 1 as the next digit of the answer. 
Result so far: 1.0
The remainder is 85 after subtracting 99 from 184.
Append the next digit (3) from the dividend to 85 and continue with: 853 / 99

Let's proceed to step 4:
If we divide 853 by 99, we get 8 and a remainder of 61.
Use 8 as the next digit of our solution. 
Result so far: 18.0
If we take 792 away from 853, we end up with 61.
Include the next digit (1) from the dividend after 61, then repeat: 611 / 99

Let's proceed to step 5:
99 can be fit into 611 6 times, resulting in a remainder of 17.
The next digit of our result is 6. 
Result so far: 186.0
The remainder is 17 after subtracting 594 from 611.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Moving on to step 6:
99 can be fit into 170 1 times, resulting in a remainder of 71.
Write down 1 as next digit of the result. 
Result so far: 186.1
Subtracting 99 from 170 leaves us with 71.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

On to step 7:
When dividing 710 by 99, we get 7 with a remainder of 17.
Record the quotient 7 as the next digit in the result. 
Result so far: 186.17
Subtract 693 from 710 to get 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

On to step 8:
99 can be fit into 170 1 times, resulting in a remainder of 71.
The next digit of our result is 1. 
Result so far: 186.171
The remainder is 71 after subtracting 99 from 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

Going ahead to step 9:
If we divide 710 by 99, we get 7 and a remainder of 17.
The next digit of our result is 7. 
Result so far: 186.1717
If we take 693 away from 710, we end up with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Let's proceed to step 10:
If we divide 170 by 99, we get 1 and a remainder of 71.
The number 1 becomes the next digit in our result. 
Result so far: 186.17171
If we subtract 99 from 170, we get 71.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

Going ahead to step 11:
If we divide 710 by 99, we get 7 and a remainder of 17.
Record the quotient 7 as the next digit in the result. 
Result so far: 186.171717
If we take 693 away from 710, we end up with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Advancing to step 12:
The number 99 fits into 170 1 times, leaving a remainder of 71.
Write down 1 as next digit of the result. 
Result so far: 186.1717171
The remainder is 71 after subtracting 99 from 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

Going ahead to step 13:
710 divided by 99 is 7 with a remainder of 17.
The next digit of our result is 7. 
Result so far: 186.17171717
Deduct 693 from 710 and we're left with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

The final result is 186.17171717 with a remainder of 1.7e-08.