We're dividing 99951 by 18 
We're looking to find how many times 18 goes into 99951.

Advancing to step 1:
9 divided by 18 is 0 with a remainder of 9.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 9 leaves us with 9.
Take the next digit (9) from the dividend and append it to 9, then repeat: 99 / 18

Let's proceed to step 2:
18 can be fit into 99 5 times, resulting in a remainder of 9.
Write down 5 as next digit of the result. 
Result so far: 5.0
The remainder is 9 after subtracting 90 from 99.
Grab the next digit (9) from the dividend, add it to 9, then carry on: 99 / 18

Going ahead to step 3:
When dividing 99 by 18, we get 5 with a remainder of 9.
Put 5 as the next digit of the answer. 
Result so far: 55.0
If we take 90 away from 99, we end up with 9.
Include the next digit (5) from the dividend after 9, then repeat: 95 / 18

On to step 4:
When dividing 95 by 18, we get 5 with a remainder of 5.
Use 5 as the next digit of our solution. 
Result so far: 555.0
Deduct 90 from 95 and we're left with 5.
Bring next digit (1) of the dividend behind the 5 and repeat the process: 51 / 18

Moving on to step 5:
If we divide 51 by 18, we get 2 and a remainder of 15.
Write down 2 as next digit of the result. 
Result so far: 5552.0
If we subtract 36 from 51, we get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Let's proceed to step 6:
If we divide 150 by 18, we get 8 and a remainder of 6.
The number 8 becomes the next digit in our result. 
Result so far: 5552.8
Deduct 144 from 150 and we're left with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

On to step 7:
60 divided by 18 is 3 with a remainder of 6.
The number 3 becomes the next digit in our result. 
Result so far: 5552.83
Deduct 54 from 60 and we're left with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Let's proceed to step 8:
When dividing 60 by 18, we get 3 with a remainder of 6.
Put 3 as the next digit of the answer. 
Result so far: 5552.833
If we subtract 54 from 60, we get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

The final result is 5552.833 with a remainder of 0.0006.