5. If a processor clock ticks 4 billion times in a second and has a frequency of 1.5 GHz, with each clock tick, one or more instructions may complete, if a program runs on 3 GHz processor for 7 seconds, how many clock cycles did it run for? (10 points)

If a program runs for 2 billion clock cycles on a 1.5 GHz processor, what is the execution time in seconds? (10 points)