We're dividing 647666 by 4 
We want to divide 647666 by 4.

On to step 1:
4 can be fit into 6 1 times, resulting in a remainder of 2.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
The remainder is 2 after subtracting 4 from 6.
Take the next digit (4) from the dividend and append it to 2, then repeat: 24 / 4

Step 2:
If we divide 24 by 4, we get 6 and a remainder of 0.
Use 6 as the next digit of our solution. 
Result so far: 16.0
Subtracting 24 from 24 leaves us with 0.
Include the next digit (7) from the dividend after 0, then repeat: 7 / 4

Advancing to step 3:
When dividing 7 by 4, we get 1 with a remainder of 3.
Write down 1 as next digit of the result. 
Result so far: 161.0
Subtract 4 from 7 to get 3.
Take the next digit (6) from the dividend and append it to 3, then repeat: 36 / 4

Going ahead to step 4:
When dividing 36 by 4, we get 9 with a remainder of 0.
Use 9 as the next digit of our solution. 
Result so far: 1619.0
If we take 36 away from 36, we end up with 0.
Fetch the next digit (6) from the dividend, attach it to 0 and continue: 6 / 4

On to step 5:
When dividing 6 by 4, we get 1 with a remainder of 2.
Write down 1 as next digit of the result. 
Result so far: 16191.0
The remainder is 2 after subtracting 4 from 6.
Bring next digit (6) of the dividend behind the 2 and repeat the process: 26 / 4

Step 6:
4 can be fit into 26 6 times, resulting in a remainder of 2.
The next digit of our result is 6. 
Result so far: 161916.0
Deduct 24 from 26 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.

On to step 7:
4 goes into 20 5 times with a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 161916.5
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.

Going ahead to step 8:
If we divide 0 by 4, we get 0 and a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 161916.5
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 9:
The number 4 fits into 0 0 times, leaving a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 161916.5
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.

The final result is 161916.5 with a remainder of 0.0.