We're dividing 340909 by 80 
We want to figure out the number of times 340909 can be divided by 80.

Going ahead to step 1:
When dividing 3 by 80, we get 0 with a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Bring next digit (4) of the dividend behind the 3 and repeat the process: 34 / 80

Going ahead to step 2:
The number 80 fits into 34 0 times, leaving a remainder of 34.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 34, we get 34.
Grab the next digit (0) from the dividend, add it to 34, then carry on: 340 / 80

On to step 3:
340 divided by 80 is 4 with a remainder of 20.
Write down 4 as next digit of the result. 
Result so far: 4.0
Subtract 320 from 340 to get 20.
Fetch the next digit (9) from the dividend, attach it to 20 and continue: 209 / 80

Advancing to step 4:
When dividing 209 by 80, we get 2 with a remainder of 49.
The next digit of our result is 2. 
Result so far: 42.0
The remainder is 49 after subtracting 160 from 209.
Append the next digit (0) from the dividend to 49 and continue with: 490 / 80

Advancing to step 5:
80 can be fit into 490 6 times, resulting in a remainder of 10.
Write down 6 as next digit of the result. 
Result so far: 426.0
If we take 480 away from 490, we end up with 10.
Bring next digit (9) of the dividend behind the 10 and repeat the process: 109 / 80

Going ahead to step 6:
The number 80 fits into 109 1 times, leaving a remainder of 29.
Record the quotient 1 as the next digit in the result. 
Result so far: 4261.0
Subtract 80 from 109 to get 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Going ahead to step 7:
80 can be fit into 290 3 times, resulting in a remainder of 50.
The next digit of our result is 3. 
Result so far: 4261.3
The remainder is 50 after subtracting 240 from 290.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Going ahead to step 8:
80 can be fit into 500 6 times, resulting in a remainder of 20.
The number 6 becomes the next digit in our result. 
Result so far: 4261.36
Subtract 480 from 500 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 9:
The number 80 fits into 200 2 times, leaving a remainder of 40.
The number 2 becomes the next digit in our result. 
Result so far: 4261.362
If we subtract 160 from 200, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Going ahead to step 10:
400 divided by 80 is 5 with a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 4261.3625
Subtracting 400 from 400 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.

Let's proceed to step 11:
When dividing 0 by 80, we get 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 4261.3625
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.

Advancing to step 12:
If we divide 0 by 80, we get 0 and a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 4261.3625
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.

The final outcome is 4261.3625, with a leftover of 0.0.