During the year, Wright Company sells $480$ remote$-$control airplanes for $$100$ each. The company has the following inventory purchase transactions for the year.

$\backslash$table$[[$Date$,$Transaction,$\backslash$table$[[$Number of$],[$Units$]],\backslash$table$[[$Unit$],[$Cost$]],\backslash$table$[[$Total$],[$Cost$]]],[\backslash$table$[[$January $1],[$May $5],[$November $3]],\backslash$table$[[$Beginning inventory$],[$Purchase$],[$Purchase$]],\backslash$table$[[50],[260],[210]],\backslash$table$[[$$$70$