640672 ÷ 2 
The aim is to understand the frequency of 2 in 640672.

On to step 1:
The number 2 fits into 6 3 times, leaving a remainder of 0.
Write down 3 as next digit of the result. 
Result so far: 3.0
Deduct 6 from 6 and we're left with 0.
Fetch the next digit (4) from the dividend, attach it to 0 and continue: 4 / 2

Advancing to step 2:
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: 32.0
If we take 4 away from 4, we end up with 0.
Grab the next digit (0) from the dividend, add it to 0, then carry on: 0 / 2

Advancing to step 3:
2 goes into 0 0 times with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 320.0
If we subtract 0 from 0, we get 0.
Bring next digit (6) of the dividend behind the 0 and repeat the process: 6 / 2

Step 4:
2 can be fit into 6 3 times, resulting in a remainder of 0.
Put 3 as the next digit of the answer. 
Result so far: 3203.0
Subtracting 6 from 6 leaves us with 0.
Bring next digit (7) of the dividend behind the 0 and repeat the process: 7 / 2

On to step 5:
If we divide 7 by 2, we get 3 and a remainder of 1.
Record the quotient 3 as the next digit in the result. 
Result so far: 32033.0
The remainder is 1 after subtracting 6 from 7.
Fetch the next digit (2) from the dividend, attach it to 1 and continue: 12 / 2

Let's proceed to step 6:
2 can be fit into 12 6 times, resulting in a remainder of 0.
Put 6 as the next digit of the answer. 
Result so far: 320336.0
Subtract 12 from 12 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.

Step 7:
When dividing 0 by 2, we get 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 320336.0
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.

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: 320336.0
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.

Our division results in 320336.0 with a remaining 0.0.