Earth, Sandwiches,Fractions,etc. How Big is Big?

You order a one- third-pounder hamburger or veggie burger because it is bigger than a one-forth pounder but how much bigger is it really?

Fractions: (1/3)-(1/4) = (4/12)-(3/12)= difference of (1/12)

Not much difference, but the above... amounts to 1 and 1/3 ounces, or 2 tablespoons and a pinch more.Yes, there are two level tablespoons in a ounce.

                        Decimals: (.33 - .25)=.08
                   Percentages: (.08/100) or .0008%
So percentage wise we are not  getting  much more, ordering a one-third pounder.
                                    The Earth
Some say the earth is covered by 75% (3/4) of water others say that the earth is covered by 67% (2/3) of water let's find the difference between those two. 

Fractions:      (3/4)-(2/3)=(9/12)-(8/12)= total  again (1/12)

Decimals:       (.75 - .67)=.08

Percentages:  (.08/100) or again .0008%  

But unlike our sandwiches, the volume of the earth is a big deal, even at .0008 % it is still a big chunk of the earth.
The earth has a volume of 650 billion cubit miles .0008% of that is 52 billion cubit miles.   

In kilometers the earth's volume is 1 trillion* cubit kilometers and .0008 % of that is: 80,000,000,000 cubit kilometers.At present tough they say the earth is covered by 71% of water.

*A trillion is a number followed by twelve zeroes in both the United States and the United Kingdom. (end)