We look at the division of 809509 by 2 
The aim is to understand the frequency of 2 in 809509.

Moving on to step 1:
2 can be fit into 8 4 times, resulting in a remainder of 0.
Put 4 as the next digit of the answer. 
Result so far: 4.0
Subtract 8 from 8 to get 0.
Include the next digit (0) from the dividend after 0, then repeat: 0 / 2

Moving on to step 2:
2 can be fit into 0 0 times, resulting in a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 40.0
If we subtract 0 from 0, we get 0.
Grab the next digit (9) from the dividend, add it to 0, then carry on: 9 / 2

Let's proceed to step 3:
9 divided by 2 is 4 with a remainder of 1.
Write down 4 as next digit of the result. 
Result so far: 404.0
If we take 8 away from 9, we end up with 1.
Bring next digit (5) of the dividend behind the 1 and repeat the process: 15 / 2

Advancing to step 4:
When dividing 15 by 2, we get 7 with a remainder of 1.
The number 7 becomes the next digit in our result. 
Result so far: 4047.0
If we subtract 14 from 15, we get 1.
Bring next digit (0) of the dividend behind the 1 and repeat the process: 10 / 2

On to step 5:
10 divided by 2 is 5 with a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 40475.0
Subtract 10 from 10 to get 0.
Fetch the next digit (9) from the dividend, attach it to 0 and continue: 9 / 2

Going ahead to step 6:
9 divided by 2 is 4 with a remainder of 1.
Use 4 as the next digit of our solution. 
Result so far: 404754.0
The remainder is 1 after subtracting 8 from 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Let's proceed to step 7:
2 can be fit into 10 5 times, resulting in a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 404754.5
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.

On to step 8:
2 goes into 0 0 times with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 404754.5
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.

On 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: 404754.5
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.

The quotient of the division is 404754.5, and the remainder is 0.0.