We're dividing 91509 by 18 
Let's see how many times 18 fits into 91509.

Advancing to step 1:
If we divide 9 by 18, we get 0 and a remainder of 9.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 9 to get 9.
Bring next digit (1) of the dividend behind the 9 and repeat the process: 91 / 18

Let's proceed to step 2:
If we divide 91 by 18, we get 5 and a remainder of 1.
Record the quotient 5 as the next digit in the result. 
Result so far: 5.0
If we subtract 90 from 91, we get 1.
Include the next digit (5) from the dividend after 1, then repeat: 15 / 18

Let's proceed to step 3:
18 can be fit into 15 0 times, resulting in a remainder of 15.
Use 0 as the next digit of our solution. 
Result so far: 50.0
Subtract 0 from 15 to get 15.
Append the next digit (0) from the dividend to 15 and continue with: 150 / 18

Let's proceed to step 4:
When dividing 150 by 18, we get 8 with a remainder of 6.
The number 8 becomes the next digit in our result. 
Result so far: 508.0
If we subtract 144 from 150, we get 6.
Grab the next digit (9) from the dividend, add it to 6, then carry on: 69 / 18

Advancing to step 5:
If we divide 69 by 18, we get 3 and a remainder of 15.
Record the quotient 3 as the next digit in the result. 
Result so far: 5083.0
Subtract 54 from 69 to 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.

Advancing to step 6:
150 divided by 18 is 8 with a remainder of 6.
Put 8 as the next digit of the answer. 
Result so far: 5083.8
Subtract 144 from 150 to 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.

Going ahead to step 7:
If we divide 60 by 18, we get 3 and a remainder of 6.
The number 3 becomes the next digit in our result. 
Result so far: 5083.83
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.

Going ahead to step 8:
18 goes into 60 3 times with a remainder of 6.
The number 3 becomes the next digit in our result. 
Result so far: 5083.833
Subtracting 54 from 60 leaves us 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.

The final outcome is 5083.833, with a leftover of 0.0006.