Isotope Abundance

The nuclear power industry extracts \(^6\)Li but not \(^7\)Li from natural samples of lithium. As a result, the average molar mass of commercial samples of lithium is increased. The current abundace of the two isotopes are 7.42% and 95.58% respectively, and the masses of their atoms are 9.968 x 10\(^{-24}\) g and 1.165 x 10\(^{-23}\) g. What is the current molar mass of a natural sample of lithium?