Please I only have an hour!!!!!!!!!!!!!

A 465 g portion of soup is heated in a microwave oven from 25.0 °C to 90.0 °C, using radiation with a wavelength of 1.55 × 10⁻² m. Assuming the specific heat capacity of the soup is the same as water (4.184 J/ °C･g), how many photons are absorbed by the soup?