We're dividing 67991 by 5 
We want to divide 67991 by 5.

Let's proceed to step 1:
If we divide 6 by 5, we get 1 and a remainder of 1.
Write down 1 as next digit of the result. 
Result so far: 1.0
The remainder is 1 after subtracting 5 from 6.
Grab the next digit (7) from the dividend, add it to 1, then carry on: 17 / 5

Moving on to step 2:
If we divide 17 by 5, we get 3 and a remainder of 2.
Use 3 as the next digit of our solution. 
Result so far: 13.0
Subtract 15 from 17 to get 2.
Bring next digit (9) of the dividend behind the 2 and repeat the process: 29 / 5

Going ahead to step 3:
5 can be fit into 29 5 times, resulting in a remainder of 4.
The number 5 becomes the next digit in our result. 
Result so far: 135.0
If we take 25 away from 29, we end up with 4.
Include the next digit (9) from the dividend after 4, then repeat: 49 / 5

Going ahead to step 4:
49 divided by 5 is 9 with a remainder of 4.
Put 9 as the next digit of the answer. 
Result so far: 1359.0
The remainder is 4 after subtracting 45 from 49.
Append the next digit (1) from the dividend to 4 and continue with: 41 / 5

On to step 5:
5 goes into 41 8 times with a remainder of 1.
The next digit of our result is 8. 
Result so far: 13598.0
The remainder is 1 after subtracting 40 from 41.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Step 6:
5 goes into 10 2 times with a remainder of 0.
The next digit of our result is 2. 
Result so far: 13598.2
If we take 10 away from 10, 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.

Advancing to step 7:
If we divide 0 by 5, we get 0 and a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 13598.2
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.

Step 8:
If we divide 0 by 5, we get 0 and a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 13598.2
The remainder is 0 after subtracting 0 from 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 result is 13598.2 with a remainder of 0.0.