Super Hard Algebra question?

A neutrino is one of twelve fundamental particles. Neutrinos are undoubtedly the strangest of the particles fundamental that make up all the visible matter. They are so small, tens of thousands of current through every human body every second, and most could easily browse through a few trillion miles of lead without smacking into anything. A find in 1998 indicated that these small particles are actually mass, and that no thought was the case before. These particles are everywhere – even the most seemingly barren empty interstellar space contain a whopping 1,500 neutrinos per cubic centimeter. a) How many neutrinos had in one cubic foot of this interstellar space? (Hint: First calculate the number of cubic centimeters in one cubic foot) (2 points) b) There are about 50 billion neutrinos for every electron, and it is estimated that there are 10 ^ 80 electrons in the universe. How neutrinos in the universe? (2 points) I will give 10 points to best answer, please show work

a) 12 to 1 foot = ~> 1728 cu. = In 1 cu. ft 1500 * 1728 = 2,592,000 neutrinos / m ^ 3 b) 5×10 ^ 10 * 10 ^ 80 = 5×10 ^ 90

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