643855 divided by 5 
We want to divide 643855 by 5.

On to step 1:
If we divide 6 by 5, we get 1 and a remainder of 1.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtract 5 from 6 to get 1.
Take the next digit (4) from the dividend and append it to 1, then repeat: 14 / 5

Moving on to step 2:
When dividing 14 by 5, we get 2 with a remainder of 4.
Record the quotient 2 as the next digit in the result. 
Result so far: 12.0
If we take 10 away from 14, we end up with 4.
Include the next digit (3) from the dividend after 4, then repeat: 43 / 5

Moving on to step 3:
The number 5 fits into 43 8 times, leaving a remainder of 3.
Use 8 as the next digit of our solution. 
Result so far: 128.0
Deduct 40 from 43 and we're left with 3.
Append the next digit (8) from the dividend to 3 and continue with: 38 / 5

Going ahead to step 4:
38 divided by 5 is 7 with a remainder of 3.
Record the quotient 7 as the next digit in the result. 
Result so far: 1287.0
If we take 35 away from 38, we end up with 3.
Take the next digit (5) from the dividend and append it to 3, then repeat: 35 / 5

Step 5:
The number 5 fits into 35 7 times, leaving a remainder of 0.
The next digit of our result is 7. 
Result so far: 12877.0
Deduct 35 from 35 and we're left with 0.
Bring next digit (5) of the dividend behind the 0 and repeat the process: 5 / 5

Moving on to step 6:
The number 5 fits into 5 1 times, leaving a remainder of 0.
The number 1 becomes the next digit in our result. 
Result so far: 128771.0
Subtract 5 from 5 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.

Step 7:
The number 5 fits into 0 0 times, leaving a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 128771.0
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.

Going ahead to step 8:
When dividing 0 by 5, we get 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 128771.0
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.

In conclusion, the division gives 128771.0 with a balance of 0.0.