There are two optical telescopes operating at the exact same frequency. The first telescope is an 18 m telescope planned to be located at the L2 Lagrangian point 1.5 million kilometers past the orbit of Earth. The second telescope is a 2 m telescope planned to be placed on the far side of the moon (average distance to the moon is 380,000 km from the Earth). The 18 m telescope has a greater light gathering power by a factor of _____ times. Only enter your numerical answer below - do not include units. Report your answer to 2 decimal places.
a. 144
b. 100
c. 121
d. 169