We look at the division of 648321 by 4 
We want to figure out the number of times 648321 can be divided by 4.

On to step 1:
When dividing 6 by 4, we get 1 with a remainder of 2.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we take 4 away from 6, we end up with 2.
Append the next digit (4) from the dividend to 2 and continue with: 24 / 4

Step 2:
When dividing 24 by 4, we get 6 with a remainder of 0.
The next digit of our result is 6. 
Result so far: 16.0
Subtracting 24 from 24 leaves us with 0.
Bring next digit (8) of the dividend behind the 0 and repeat the process: 8 / 4

On to step 3:
4 goes into 8 2 times with a remainder of 0.
Write down 2 as next digit of the result. 
Result so far: 162.0
Subtract 8 from 8 to get 0.
Include the next digit (3) from the dividend after 0, then repeat: 3 / 4

Step 4:
When dividing 3 by 4, we get 0 with a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 1620.0
Subtract 0 from 3 to get 3.
Include the next digit (2) from the dividend after 3, then repeat: 32 / 4

Step 5:
4 can be fit into 32 8 times, resulting in a remainder of 0.
Record the quotient 8 as the next digit in the result. 
Result so far: 16208.0
The remainder is 0 after subtracting 32 from 32.
Append the next digit (1) from the dividend to 0 and continue with: 1 / 4

Step 6:
4 can be fit into 1 0 times, resulting in a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 162080.0
If we subtract 0 from 1, we get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Moving on to step 7:
The number 4 fits into 10 2 times, leaving a remainder of 2.
Put 2 as the next digit of the answer. 
Result so far: 162080.2
Deduct 8 from 10 and we're left with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Let's proceed to step 8:
4 goes into 20 5 times with a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 162080.25
Subtract 20 from 20 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.

Moving on to step 9:
0 divided by 4 is 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 162080.25
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.

Moving on to step 10:
4 goes into 0 0 times with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 162080.25
Deduct 0 from 0 and we're left 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 quotient of the division is 162080.25, and the remainder is 0.0.