Let's divide 637720 by 2
Let's see how many times 2 fits into 637720.

Let's proceed to step 1:
2 goes into 6 3 times with a remainder of 0.
Put 3 as the next digit of the answer. 
Result so far: 3.0
If we subtract 6 from 6, we get 0.
Fetch the next digit (3) from the dividend, attach it to 0 and continue: 3 / 2

Step 2:
If we divide 3 by 2, we get 1 and a remainder of 1.
Write down 1 as next digit of the result. 
Result so far: 31.0
If we take 2 away from 3, we end up with 1.
Fetch the next digit (7) from the dividend, attach it to 1 and continue: 17 / 2

Let's proceed to step 3:
The number 2 fits into 17 8 times, leaving a remainder of 1.
Record the quotient 8 as the next digit in the result. 
Result so far: 318.0
The remainder is 1 after subtracting 16 from 17.
Fetch the next digit (7) from the dividend, attach it to 1 and continue: 17 / 2

Step 4:
When dividing 17 by 2, we get 8 with a remainder of 1.
Use 8 as the next digit of our solution. 
Result so far: 3188.0
Deduct 16 from 17 and we're left with 1.
Include the next digit (2) from the dividend after 1, then repeat: 12 / 2

Advancing to step 5:
If we divide 12 by 2, we get 6 and a remainder of 0.
Put 6 as the next digit of the answer. 
Result so far: 31886.0
If we subtract 12 from 12, we get 0.
Fetch the next digit (0) from the dividend, attach it to 0 and continue: 0 / 2

Moving on to step 6:
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: 318860.0
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.

Let's proceed to step 7:
0 divided by 2 is 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 318860.0
Subtract 0 from 0 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:
2 goes into 0 0 times with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 318860.0
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.

In conclusion, the division gives 318860.0 with a balance of 0.0.