We look at the division of 668839 by 5 
Let's see how many times 5 fits into 668839.

Moving on to step 1:
If we divide 6 by 5, we get 1 and a remainder of 1.
Put 1 as the next digit of the answer. 
Result so far: 1.0
The remainder is 1 after subtracting 5 from 6.
Fetch the next digit (6) from the dividend, attach it to 1 and continue: 16 / 5

Step 2:
The number 5 fits into 16 3 times, leaving a remainder of 1.
Record the quotient 3 as the next digit in the result. 
Result so far: 13.0
The remainder is 1 after subtracting 15 from 16.
Append the next digit (8) from the dividend to 1 and continue with: 18 / 5

Let's proceed to step 3:
The number 5 fits into 18 3 times, leaving a remainder of 3.
Put 3 as the next digit of the answer. 
Result so far: 133.0
Subtract 15 from 18 to get 3.
Take the next digit (8) from the dividend and append it to 3, then repeat: 38 / 5

Going ahead to step 4:
5 can be fit into 38 7 times, resulting in a remainder of 3.
The number 7 becomes the next digit in our result. 
Result so far: 1337.0
If we subtract 35 from 38, we get 3.
Grab the next digit (3) from the dividend, add it to 3, then carry on: 33 / 5

On to step 5:
5 goes into 33 6 times with a remainder of 3.
Record the quotient 6 as the next digit in the result. 
Result so far: 13376.0
Deduct 30 from 33 and we're left with 3.
Fetch the next digit (9) from the dividend, attach it to 3 and continue: 39 / 5

On to step 6:
If we divide 39 by 5, we get 7 and a remainder of 4.
The number 7 becomes the next digit in our result. 
Result so far: 133767.0
Subtracting 35 from 39 leaves us with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Let's proceed to step 7:
If we divide 40 by 5, we get 8 and a remainder of 0.
Put 8 as the next digit of the answer. 
Result so far: 133767.8
If we subtract 40 from 40, 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:
When dividing 0 by 5, we get 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 133767.8
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.

On to step 9:
5 can be fit into 0 0 times, resulting in a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 133767.8
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.

The final result is 133767.8 with a remainder of 0.0.