We look at the division of 6840 by 80 
Let's see how many times 80 fits into 6840.

Let's proceed to step 1:
6 divided by 80 is 0 with a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Fetch the next digit (8) from the dividend, attach it to 6 and continue: 68 / 80

Step 2:
80 goes into 68 0 times with a remainder of 68.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 68, we get 68.
Fetch the next digit (4) from the dividend, attach it to 68 and continue: 684 / 80

Step 3:
If we divide 684 by 80, we get 8 and a remainder of 44.
Write down 8 as next digit of the result. 
Result so far: 8.0
If we take 640 away from 684, we end up with 44.
Take the next digit (0) from the dividend and append it to 44, then repeat: 440 / 80

Let's proceed to step 4:
When dividing 440 by 80, we get 5 with a remainder of 40.
Record the quotient 5 as the next digit in the result. 
Result so far: 85.0
If we take 400 away from 440, we end up with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

On to step 5:
400 divided by 80 is 5 with a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 85.5
The remainder is 0 after subtracting 400 from 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 6:
If we divide 0 by 80, we get 0 and a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 85.5
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.

On to step 7:
0 divided by 80 is 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 85.5
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.

The quotient of the division is 85.5, and the remainder is 0.0.