We look at the division of 439734 by 3 
We want to figure out the number of times 439734 can be divided by 3.

On to step 1:
3 goes into 4 1 times with a remainder of 1.
Use 1 as the next digit of our solution. 
Result so far: 1.0
The remainder is 1 after subtracting 3 from 4.
Append the next digit (3) from the dividend to 1 and continue with: 13 / 3

On to step 2:
3 can be fit into 13 4 times, resulting in a remainder of 1.
Record the quotient 4 as the next digit in the result. 
Result so far: 14.0
The remainder is 1 after subtracting 12 from 13.
Grab the next digit (9) from the dividend, add it to 1, then carry on: 19 / 3

Let's proceed to step 3:
If we divide 19 by 3, we get 6 and a remainder of 1.
Put 6 as the next digit of the answer. 
Result so far: 146.0
Deduct 18 from 19 and we're left with 1.
Append the next digit (7) from the dividend to 1 and continue with: 17 / 3

Step 4:
3 can be fit into 17 5 times, resulting in a remainder of 2.
The number 5 becomes the next digit in our result. 
Result so far: 1465.0
If we subtract 15 from 17, we get 2.
Include the next digit (3) from the dividend after 2, then repeat: 23 / 3

Advancing to step 5:
If we divide 23 by 3, we get 7 and a remainder of 2.
Write down 7 as next digit of the result. 
Result so far: 14657.0
If we subtract 21 from 23, we get 2.
Bring next digit (4) of the dividend behind the 2 and repeat the process: 24 / 3

On to step 6:
The number 3 fits into 24 8 times, leaving a remainder of 0.
Use 8 as the next digit of our solution. 
Result so far: 146578.0
The remainder is 0 after subtracting 24 from 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 7:
3 goes into 0 0 times with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 146578.0
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.

Moving on to step 8:
3 can be fit into 0 0 times, resulting in a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 146578.0
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 146578.0 with a remaining 0.0.