Divide. Express your answer in scientific notation.

6.6x10^-4/3x10^-2

To divide these numbers in scientific notation, divide the coefficients and subtract the exponents.

(6.6/3) x 10^(-4-(-2))
= 2.2 x 10^(-4+2)
= 2.2 x 10^(-2)

Therefore, 6.6 x 10^-4 / 3 x 10^-2 = 2.2 x 10^-2.