518054 ÷ 3 
Let's see how many times 3 fits into 518054.

Step 1:
The number 3 fits into 5 1 times, leaving a remainder of 2.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Deduct 3 from 5 and we're left with 2.
Grab the next digit (1) from the dividend, add it to 2, then carry on: 21 / 3

Going ahead to step 2:
3 can be fit into 21 7 times, resulting in a remainder of 0.
Write down 7 as next digit of the result. 
Result so far: 17.0
The remainder is 0 after subtracting 21 from 21.
Bring next digit (8) of the dividend behind the 0 and repeat the process: 8 / 3

Let's proceed to step 3:
When dividing 8 by 3, we get 2 with a remainder of 2.
Write down 2 as next digit of the result. 
Result so far: 172.0
If we subtract 6 from 8, we get 2.
Take the next digit (0) from the dividend and append it to 2, then repeat: 20 / 3

On to step 4:
20 divided by 3 is 6 with a remainder of 2.
Write down 6 as next digit of the result. 
Result so far: 1726.0
If we subtract 18 from 20, we get 2.
Grab the next digit (5) from the dividend, add it to 2, then carry on: 25 / 3

Let's proceed to step 5:
3 goes into 25 8 times with a remainder of 1.
The next digit of our result is 8. 
Result so far: 17268.0
Subtract 24 from 25 to get 1.
Include the next digit (4) from the dividend after 1, then repeat: 14 / 3

Going ahead to step 6:
The number 3 fits into 14 4 times, leaving a remainder of 2.
Use 4 as the next digit of our solution. 
Result so far: 172684.0
If we subtract 12 from 14, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Going ahead to step 7:
If we divide 20 by 3, we get 6 and a remainder of 2.
Use 6 as the next digit of our solution. 
Result so far: 172684.6
Subtract 18 from 20 to get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Advancing to step 8:
If we divide 20 by 3, we get 6 and a remainder of 2.
The next digit of our result is 6. 
Result so far: 172684.66
If we take 18 away from 20, we end up with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

After the division, we end up with 172684.66 and a remainder of 0.002.