Need help with Beer’s Law

You make a solution with one drop of blue dye in water. You record an absorbance value of 0.692 with a spectrometer, measured in a 1-cm cuvette at a wavelength of 630nm. The molar absorptivity of the dye is 1.38×10^5 L/(mole x cm). Use Beer’s Law to calculate the concentration of the blue dye in mol…