We divide 390558 by 3
We want to divide 390558 by 3.

Advancing to step 1:
If we divide 3 by 3, we get 1 and a remainder of 0.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we subtract 3 from 3, we get 0.
Grab the next digit (9) from the dividend, add it to 0, then carry on: 9 / 3

Advancing to step 2:
3 can be fit into 9 3 times, resulting in a remainder of 0.
Put 3 as the next digit of the answer. 
Result so far: 13.0
Subtracting 9 from 9 leaves us with 0.
Take the next digit (0) from the dividend and append it to 0, then repeat: 0 / 3

Let's proceed to step 3:
If we divide 0 by 3, we get 0 and a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 130.0
The remainder is 0 after subtracting 0 from 0.
Append the next digit (5) from the dividend to 0 and continue with: 5 / 3

Going ahead to step 4:
When dividing 5 by 3, we get 1 with a remainder of 2.
Write down 1 as next digit of the result. 
Result so far: 1301.0
If we subtract 3 from 5, we get 2.
Grab the next digit (5) from the dividend, add it to 2, then carry on: 25 / 3

Step 5:
3 goes into 25 8 times with a remainder of 1.
The next digit of our result is 8. 
Result so far: 13018.0
If we subtract 24 from 25, we get 1.
Grab the next digit (8) from the dividend, add it to 1, then carry on: 18 / 3

Moving on to step 6:
When dividing 18 by 3, we get 6 with a remainder of 0.
Put 6 as the next digit of the answer. 
Result so far: 130186.0
Subtract 18 from 18 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:
If we divide 0 by 3, we get 0 and a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 130186.0
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.

Advancing to step 8:
If we divide 0 by 3, we get 0 and a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 130186.0
If we subtract 0 from 0, 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.

Our division results in 130186.0 with a remaining 0.0.