We divide 621853 by 2
Let's see how many times 2 fits into 621853.

Going ahead to step 1:
6 divided by 2 is 3 with a remainder of 0.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
Subtracting 6 from 6 leaves us with 0.
Take the next digit (2) from the dividend and append it to 0, then repeat: 2 / 2

On to step 2:
2 goes into 2 1 times with a remainder of 0.
Use 1 as the next digit of our solution. 
Result so far: 31.0
Subtract 2 from 2 to get 0.
Append the next digit (1) from the dividend to 0 and continue with: 1 / 2

Let's proceed to step 3:
1 divided by 2 is 0 with a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 310.0
Subtracting 0 from 1 leaves us with 1.
Bring next digit (8) of the dividend behind the 1 and repeat the process: 18 / 2

Let's proceed to step 4:
2 goes into 18 9 times with a remainder of 0.
The next digit of our result is 9. 
Result so far: 3109.0
Subtract 18 from 18 to get 0.
Take the next digit (5) from the dividend and append it to 0, then repeat: 5 / 2

On to step 5:
5 divided by 2 is 2 with a remainder of 1.
The number 2 becomes the next digit in our result. 
Result so far: 31092.0
Subtracting 4 from 5 leaves us with 1.
Include the next digit (3) from the dividend after 1, then repeat: 13 / 2

Let's proceed to step 6:
2 goes into 13 6 times with a remainder of 1.
The next digit of our result is 6. 
Result so far: 310926.0
If we subtract 12 from 13, 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.

On to step 7:
2 goes into 10 5 times with a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 310926.5
Deduct 10 from 10 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.

Going ahead to step 8:
The number 2 fits into 0 0 times, leaving a remainder of 0.
The next digit of our result is 0. 
Result so far: 310926.5
If we take 0 away from 0, we end up 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.

Step 9:
2 goes into 0 0 times with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 310926.5
The remainder is 0 after subtracting 0 from 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 310926.5 with a balance of 0.0.