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In the first place 270,000.00 is not correct.


3000 times 3000 times 3000 is 27,000,000,000.  The three 3s give you the 27 and the nine zeros give you nine zeros.


Then you wrote *[tex \LARGE 2.7 \times 10^9], so work backwards from your answer to check if that is correct.


Start with 2.7 and then move the decimal point 9 places to the right:


2,700,000,000.  Compare that to 27,000,000,000.  Ten times too small.  So what you need is: *[tex \LARGE 2.7 \times 10^{10}].


You were off because 3 cubed is 27, but you are writing 2.7


John
*[tex \LARGE e^{i\pi} + 1 = 0]
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