339940 ÷ 3 
We want to figure out the number of times 339940 can be divided by 3.

Let's proceed to step 1:
When dividing 3 by 3, we get 1 with a remainder of 0.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we take 3 away from 3, we end up with 0.
Include the next digit (3) from the dividend after 0, then repeat: 3 / 3

Advancing to step 2:
3 can be fit into 3 1 times, resulting in a remainder of 0.
The number 1 becomes the next digit in our result. 
Result so far: 11.0
Subtract 3 from 3 to get 0.
Take the next digit (9) from the dividend and append it to 0, then repeat: 9 / 3

Moving on to step 3:
The number 3 fits into 9 3 times, leaving a remainder of 0.
Use 3 as the next digit of our solution. 
Result so far: 113.0
If we subtract 9 from 9, we get 0.
Grab the next digit (9) from the dividend, add it to 0, then carry on: 9 / 3

Going ahead to step 4:
If we divide 9 by 3, we get 3 and a remainder of 0.
Put 3 as the next digit of the answer. 
Result so far: 1133.0
If we subtract 9 from 9, we get 0.
Grab the next digit (4) from the dividend, add it to 0, then carry on: 4 / 3

Step 5:
The number 3 fits into 4 1 times, leaving a remainder of 1.
Put 1 as the next digit of the answer. 
Result so far: 11331.0
Subtract 3 from 4 to get 1.
Include the next digit (0) from the dividend after 1, then repeat: 10 / 3

Going ahead to step 6:
3 can be fit into 10 3 times, resulting in a remainder of 1.
Write down 3 as next digit of the result. 
Result so far: 113313.0
If we take 9 away from 10, we end up with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Let's proceed to step 7:
The number 3 fits into 10 3 times, leaving a remainder of 1.
The next digit of our result is 3. 
Result so far: 113313.3
If we subtract 9 from 10, we get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Advancing to step 8:
3 goes into 10 3 times with a remainder of 1.
Record the quotient 3 as the next digit in the result. 
Result so far: 113313.33
Subtract 9 from 10 to get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

The final result is 113313.33 with a remainder of 0.001.