Computer specification: Intel Celeron N4020 (Dual Core, up to 2.8GHz, 4M Cache, 6W) 2 USB Type-C, 2 USB 3.1 Q1) Assuming

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Computer specification: Intel Celeron N4020 (Dual Core, up to
2.8GHz, 4M Cache, 6W) 2 USB Type-C, 2 USB 3.1
Q1) Assuming that the computer can do one whole
calculation every time the clock ticks, calculate how many
operations that computer can do per second, which is the GHz
(billion cycles per second) multiplied by the cores.
Q2) If the computer could look at one person during every
operation, how many people could it look at in one second? How
many people are there in the world?
Q3) If the computer could look at one star per operation, how
long would it take to look at all the stars in a milky
way?
Please provide a solution with an explanation.