309914 ÷ 80 
We're looking to find how many times 80 goes into 309914.

On to step 1:
3 divided by 80 is 0 with a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Grab the next digit (0) from the dividend, add it to 3, then carry on: 30 / 80

Advancing to step 2:
80 goes into 30 0 times with a remainder of 30.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 30 leaves us with 30.
Append the next digit (9) from the dividend to 30 and continue with: 309 / 80

Step 3:
The number 80 fits into 309 3 times, leaving a remainder of 69.
The next digit of our result is 3. 
Result so far: 3.0
Subtract 240 from 309 to get 69.
Include the next digit (9) from the dividend after 69, then repeat: 699 / 80

Going ahead to step 4:
80 goes into 699 8 times with a remainder of 59.
Record the quotient 8 as the next digit in the result. 
Result so far: 38.0
Subtract 640 from 699 to get 59.
Take the next digit (1) from the dividend and append it to 59, then repeat: 591 / 80

Step 5:
When dividing 591 by 80, we get 7 with a remainder of 31.
The next digit of our result is 7. 
Result so far: 387.0
The remainder is 31 after subtracting 560 from 591.
Include the next digit (4) from the dividend after 31, then repeat: 314 / 80

Step 6:
314 divided by 80 is 3 with a remainder of 74.
Write down 3 as next digit of the result. 
Result so far: 3873.0
Deduct 240 from 314 and we're left with 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

Let's proceed to step 7:
If we divide 740 by 80, we get 9 and a remainder of 20.
The next digit of our result is 9. 
Result so far: 3873.9
Subtracting 720 from 740 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Going ahead to step 8:
The number 80 fits into 200 2 times, leaving a remainder of 40.
Record the quotient 2 as the next digit in the result. 
Result so far: 3873.92
The remainder is 40 after subtracting 160 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Moving on to step 9:
If we divide 400 by 80, we get 5 and a remainder of 0.
The next digit of our result is 5. 
Result so far: 3873.925
If we subtract 400 from 400, 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.

Going ahead to step 10:
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: 3873.925
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.

Let's proceed to step 11:
When dividing 0 by 80, we get 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 3873.925
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 3873.925 with a balance of 0.0.