We look at the division of 647649 by 4 
We're looking to find how many times 4 goes into 647649.

Step 1:
If we divide 6 by 4, we get 1 and a remainder of 2.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we subtract 4 from 6, we get 2.
Fetch the next digit (4) from the dividend, attach it to 2 and continue: 24 / 4

Moving on to step 2:
When dividing 24 by 4, we get 6 with a remainder of 0.
Use 6 as the next digit of our solution. 
Result so far: 16.0
Subtract 24 from 24 to get 0.
Include the next digit (7) from the dividend after 0, then repeat: 7 / 4

Going ahead to step 3:
4 goes into 7 1 times with a remainder of 3.
Record the quotient 1 as the next digit in the result. 
Result so far: 161.0
Subtracting 4 from 7 leaves us with 3.
Append the next digit (6) from the dividend to 3 and continue with: 36 / 4

Advancing to step 4:
When dividing 36 by 4, we get 9 with a remainder of 0.
Put 9 as the next digit of the answer. 
Result so far: 1619.0
If we subtract 36 from 36, we get 0.
Append the next digit (4) from the dividend to 0 and continue with: 4 / 4

Let's proceed to step 5:
4 goes into 4 1 times with a remainder of 0.
Write down 1 as next digit of the result. 
Result so far: 16191.0
If we take 4 away from 4, we end up with 0.
Bring next digit (9) of the dividend behind the 0 and repeat the process: 9 / 4

On to step 6:
4 goes into 9 2 times with a remainder of 1.
Use 2 as the next digit of our solution. 
Result so far: 161912.0
If we subtract 8 from 9, 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.

Step 7:
4 can be fit into 10 2 times, resulting in a remainder of 2.
Put 2 as the next digit of the answer. 
Result so far: 161912.2
If we take 8 away from 10, we end up 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.

Moving on to step 8:
The number 4 fits into 20 5 times, leaving a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 161912.25
The remainder is 0 after subtracting 20 from 20.
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:
4 goes into 0 0 times with a remainder of 0.
The next digit of our result is 0. 
Result so far: 161912.25
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.

Moving on to step 10:
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: 161912.25
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 outcome is 161912.25, with a leftover of 0.0.