-1/3 x -1/3 x -1/3 x -1/3 x -1/3 =
First of all, the answer is negative. A negative number raised to an even power is positive; a negative number raised to an odd power is negative.
Raise the numerator to the 5th and the denominator to the 5th
1 to the 5th is 1, 3 to the 5th is 243.
The answer is -1/243