336640 ÷ 80 
We want to divide 336640 by 80.

Step 1:
80 goes into 3 0 times with a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Fetch the next digit (3) from the dividend, attach it to 3 and continue: 33 / 80

On to step 2:
80 goes into 33 0 times with a remainder of 33.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 33, we end up with 33.
Include the next digit (6) from the dividend after 33, then repeat: 336 / 80

Let's proceed to step 3:
80 can be fit into 336 4 times, resulting in a remainder of 16.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
Subtracting 320 from 336 leaves us with 16.
Take the next digit (6) from the dividend and append it to 16, then repeat: 166 / 80

Step 4:
80 can be fit into 166 2 times, resulting in a remainder of 6.
Write down 2 as next digit of the result. 
Result so far: 42.0
The remainder is 6 after subtracting 160 from 166.
Grab the next digit (4) from the dividend, add it to 6, then carry on: 64 / 80

Moving on to step 5:
80 goes into 64 0 times with a remainder of 64.
The number 0 becomes the next digit in our result. 
Result so far: 420.0
If we subtract 0 from 64, we get 64.
Append the next digit (0) from the dividend to 64 and continue with: 640 / 80

Moving on to step 6:
80 can be fit into 640 8 times, resulting in a remainder of 0.
The next digit of our result is 8. 
Result so far: 4208.0
If we take 640 away from 640, we end up 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 7:
When dividing 0 by 80, we get 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 4208.0
Subtracting 0 from 0 leaves us 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.

Step 8:
80 goes into 0 0 times with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 4208.0
If we take 0 away from 0, we end up 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.

In conclusion, the division gives 4208.0 with a balance of 0.0.