Answer:
or 729
Explanation:
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The Quotient of Powers Property tells us that if we are dividing with exponents that have the same base, we can subtract the exponents.
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The Product of Powers Property tells us that if the bases are the same when we are multiplying we can add the exponents.

Another way to look at it is to write it out in expanded form:
When you cancel out the 3's that you have on the top and the bottom, you are left with 6 3's on the top.