A glass plate has a mass of 0.50 kg and a specific heat capacity of 840 J/(kg ∙ C°). The wavelength of infrared light is 6.0 × 10-5 m, while the wavelength of blue light is 4.7 × 10-7 m. Find the number of infrared photons and the number of blue photons needed to raise the temperature of the glass plate by 2.0 C°, assuming that all the photons are absorbed by the glass.