621188 ÷ 2 
We want to figure out the number of times 621188 can be divided by 2.

Let's proceed to step 1:
6 divided by 2 is 3 with a remainder of 0.
Put 3 as the next digit of the answer. 
Result so far: 3.0
Subtract 6 from 6 to get 0.
Fetch the next digit (2) from the dividend, attach it to 0 and continue: 2 / 2

Let's proceed to step 2:
The number 2 fits into 2 1 times, leaving a remainder of 0.
Put 1 as the next digit of the answer. 
Result so far: 31.0
Subtracting 2 from 2 leaves us with 0.
Take the next digit (1) from the dividend and append it to 0, then repeat: 1 / 2

On to step 3:
When dividing 1 by 2, we get 0 with a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 310.0
If we take 0 away from 1, we end up with 1.
Grab the next digit (1) from the dividend, add it to 1, then carry on: 11 / 2

Advancing to step 4:
2 can be fit into 11 5 times, resulting in a remainder of 1.
Record the quotient 5 as the next digit in the result. 
Result so far: 3105.0
Deduct 10 from 11 and we're left with 1.
Take the next digit (8) from the dividend and append it to 1, then repeat: 18 / 2

Step 5:
The number 2 fits into 18 9 times, leaving a remainder of 0.
The number 9 becomes the next digit in our result. 
Result so far: 31059.0
Subtracting 18 from 18 leaves us with 0.
Take the next digit (8) from the dividend and append it to 0, then repeat: 8 / 2

On to step 6:
The number 2 fits into 8 4 times, leaving a remainder of 0.
The next digit of our result is 4. 
Result so far: 310594.0
The remainder is 0 after subtracting 8 from 8.
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 7:
2 goes into 0 0 times with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 310594.0
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.

Advancing to step 8:
2 goes into 0 0 times with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 310594.0
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.

In conclusion, the division gives 310594.0 with a balance of 0.0.