Rotational spectrum of a diatomic molecule consists of lines of equal spacing with an interval of \(20.0\text{ cm}^{-1}\). Its moment of inertia is found to be \(I_0 \times 10^{-47}\text{ kg.m}^2\), the value of \(I_0\) (rounded off to one decimal place) is ______.
(\(h = 6.6 \times 10^{-34}\text{ J.s}\), speed of light in vacuum \(c = 3 \times 10^8\text{ m.s}^{-1}\))