644741 divided by 2 
We want to divide 644741 by 2.

Going ahead to step 1:
The number 2 fits into 6 3 times, leaving a remainder of 0.
Use 3 as the next digit of our solution. 
Result so far: 3.0
If we take 6 away from 6, we end up with 0.
Take the next digit (4) from the dividend and append it to 0, then repeat: 4 / 2

On to step 2:
If we divide 4 by 2, we get 2 and a remainder of 0.
The next digit of our result is 2. 
Result so far: 32.0
Deduct 4 from 4 and we're left with 0.
Include the next digit (4) from the dividend after 0, then repeat: 4 / 2

Going ahead to step 3:
2 can be fit into 4 2 times, resulting in a remainder of 0.
Put 2 as the next digit of the answer. 
Result so far: 322.0
Deduct 4 from 4 and we're left with 0.
Include the next digit (7) from the dividend after 0, then repeat: 7 / 2

On to step 4:
2 goes into 7 3 times with a remainder of 1.
Use 3 as the next digit of our solution. 
Result so far: 3223.0
Subtracting 6 from 7 leaves us with 1.
Append the next digit (4) from the dividend to 1 and continue with: 14 / 2

Let's proceed to step 5:
2 goes into 14 7 times with a remainder of 0.
The next digit of our result is 7. 
Result so far: 32237.0
If we take 14 away from 14, we end up with 0.
Grab the next digit (1) from the dividend, add it to 0, then carry on: 1 / 2

Advancing to step 6:
When dividing 1 by 2, we get 0 with a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 322370.0
If we take 0 away from 1, we end up with 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 2 fits into 10 5 times, leaving a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 322370.5
Subtract 10 from 10 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.

Advancing to step 8:
0 divided by 2 is 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 322370.5
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.

Let's proceed to step 9:
When dividing 0 by 2, we get 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 322370.5
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.

Our division results in 322370.5 with a remaining 0.0.