You are having a rocketship race with two of your alien friends, Leela and Birdperson. It turns out that both have fasted ships than you, and you see them zip past you. You measure Leela to go past at 0.45c, and Birdperson even faster at 0.82c. How fast does Leela measure Birdperson to be travelling? Give your answer as a percentage of the speed of light (i.e. if you calculate the speed as 0.27c, which is 27% the speed of light, write "27" as your answer)