We're dividing 511641 by 18 
We want to figure out the number of times 511641 can be divided by 18.

Step 1:
When dividing 5 by 18, we get 0 with a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Bring next digit (1) of the dividend behind the 5 and repeat the process: 51 / 18

Let's proceed to step 2:
18 goes into 51 2 times with a remainder of 15.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
If we subtract 36 from 51, we get 15.
Fetch the next digit (1) from the dividend, attach it to 15 and continue: 151 / 18

Step 3:
If we divide 151 by 18, we get 8 and a remainder of 7.
Use 8 as the next digit of our solution. 
Result so far: 28.0
If we take 144 away from 151, we end up with 7.
Grab the next digit (6) from the dividend, add it to 7, then carry on: 76 / 18

Moving on to step 4:
If we divide 76 by 18, we get 4 and a remainder of 4.
Put 4 as the next digit of the answer. 
Result so far: 284.0
If we subtract 72 from 76, we get 4.
Fetch the next digit (4) from the dividend, attach it to 4 and continue: 44 / 18

On to step 5:
When dividing 44 by 18, we get 2 with a remainder of 8.
Write down 2 as next digit of the result. 
Result so far: 2842.0
If we take 36 away from 44, we end up with 8.
Include the next digit (1) from the dividend after 8, then repeat: 81 / 18

Advancing to step 6:
When dividing 81 by 18, we get 4 with a remainder of 9.
Record the quotient 4 as the next digit in the result. 
Result so far: 28424.0
The remainder is 9 after subtracting 72 from 81.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

On to step 7:
18 goes into 90 5 times with a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 28424.5
If we subtract 90 from 90, we 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.

Step 8:
0 divided by 18 is 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 28424.5
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 9:
When dividing 0 by 18, we get 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 28424.5
Subtract 0 from 0 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.

After the division, we end up with 28424.5 and a remainder of 0.0.