Monkey D$.$ Luffy, from$$One Piece can inflate himself like a balloon to a size of $6\mathrm{.}20$ m$3$ by inhaling $1\mathrm{.}6610261\mathrm{.}661026$molecules of air.$$

A$)$ If the air is at $23\mathrm{.}4$C$,$ what is the pressure inside Luffy?$$ kB$=1\mathrm{.}381023$kB$=1\mathrm{.}3810-23$J$/$K

P $=$

B$)$ What is the total internal energy of the gas inside Luffy?

U $=$

C$)$ How fast, on average, is the air molecules inside Luffy traveling at$?$ The average mass of an air molecule $($considering the various gasses involved$)$ is $4\mathrm{.}51$ x $10-26$kg$.$

v $=$