$\backslash$table$[[\backslash$table$[[$Date$],[81],[813],[85]],\backslash$table$[[$Tramqaction$],[$Beginning inventory$],[$Purchase No$.1],[$Sala No$.$ I$]],\backslash$table$[[$Number of Units$],[400],[600],[500]],\backslash$table$[[$Unit Cost$],[$$$10$