We're dividing 558942 by 3 
We're looking to find how many times 3 goes into 558942.

Step 1:
3 goes into 5 1 times with a remainder of 2.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtracting 3 from 5 leaves us with 2.
Include the next digit (5) from the dividend after 2, then repeat: 25 / 3

Going ahead to step 2:
When dividing 25 by 3, we get 8 with a remainder of 1.
Write down 8 as next digit of the result. 
Result so far: 18.0
Deduct 24 from 25 and we're left with 1.
Append the next digit (8) from the dividend to 1 and continue with: 18 / 3

Going ahead to step 3:
The number 3 fits into 18 6 times, leaving a remainder of 0.
Write down 6 as next digit of the result. 
Result so far: 186.0
Subtract 18 from 18 to get 0.
Include the next digit (9) from the dividend after 0, then repeat: 9 / 3

On to step 4:
9 divided by 3 is 3 with a remainder of 0.
The number 3 becomes the next digit in our result. 
Result so far: 1863.0
If we subtract 9 from 9, we get 0.
Bring next digit (4) of the dividend behind the 0 and repeat the process: 4 / 3

On to step 5:
4 divided by 3 is 1 with a remainder of 1.
Put 1 as the next digit of the answer. 
Result so far: 18631.0
Subtracting 3 from 4 leaves us with 1.
Bring next digit (2) of the dividend behind the 1 and repeat the process: 12 / 3

Advancing to step 6:
3 can be fit into 12 4 times, resulting in a remainder of 0.
The number 4 becomes the next digit in our result. 
Result so far: 186314.0
Subtract 12 from 12 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.

Going ahead to step 7:
When dividing 0 by 3, we get 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 186314.0
Deduct 0 from 0 and we're left 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.

On to step 8:
The number 3 fits into 0 0 times, leaving a remainder of 0.
The next digit of our result is 0. 
Result so far: 186314.0
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.

In conclusion, the division gives 186314.0 with a balance of 0.0.