We're dividing 663975 by 4 
Let's see how many times 4 fits into 663975.

Moving on to step 1:
4 goes into 6 1 times with a remainder of 2.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we subtract 4 from 6, we get 2.
Take the next digit (6) from the dividend and append it to 2, then repeat: 26 / 4

Moving on to step 2:
When dividing 26 by 4, we get 6 with a remainder of 2.
Put 6 as the next digit of the answer. 
Result so far: 16.0
Subtract 24 from 26 to get 2.
Take the next digit (3) from the dividend and append it to 2, then repeat: 23 / 4

Step 3:
When dividing 23 by 4, we get 5 with a remainder of 3.
Put 5 as the next digit of the answer. 
Result so far: 165.0
The remainder is 3 after subtracting 20 from 23.
Include the next digit (9) from the dividend after 3, then repeat: 39 / 4

Going ahead to step 4:
39 divided by 4 is 9 with a remainder of 3.
The number 9 becomes the next digit in our result. 
Result so far: 1659.0
Subtract 36 from 39 to get 3.
Take the next digit (7) from the dividend and append it to 3, then repeat: 37 / 4

Going ahead to step 5:
37 divided by 4 is 9 with a remainder of 1.
Write down 9 as next digit of the result. 
Result so far: 16599.0
Subtract 36 from 37 to get 1.
Bring next digit (5) of the dividend behind the 1 and repeat the process: 15 / 4

Step 6:
If we divide 15 by 4, we get 3 and a remainder of 3.
Put 3 as the next digit of the answer. 
Result so far: 165993.0
If we take 12 away from 15, we end up with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Let's proceed to step 7:
4 goes into 30 7 times with a remainder of 2.
Record the quotient 7 as the next digit in the result. 
Result so far: 165993.7
If we subtract 28 from 30, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Step 8:
4 goes into 20 5 times with a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 165993.75
Deduct 20 from 20 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.

Let's proceed to step 9:
When dividing 0 by 4, we get 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 165993.75
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.

Advancing to step 10:
When dividing 0 by 4, we get 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 165993.75
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.

After the division, we end up with 165993.75 and a remainder of 0.0.