On the International Space Station, a device called the Contaminant Control Cartridge, which contains lithium hydroxide (LiOH), removes carbon
dioxide (CO2) from the air. Each cartridge contains 750 g LiOH and can effectively remove 2000 g CO2 from the air. If there are 6 astronauts on the
ISS and each astronaut breathes out 1000 g CO2 per day, how many kg of LiOH is needed for a 90 day mission? (Round your answer to 3
significant figures)