Someone's making a packet out of it.

　　有人從中狠賺了一筆。

　　Cook the rice according to instructions on the packet.

　　按照包裝袋上的說明煮飯。

　　You could save yourself a packet

　　你能為自己省一大筆錢。

　　It'll cost you a packet

　　那會花你一大筆錢。

　　He went out to buy a packet of cigarettes.

　　他出去買包煙。

　　I send each inquirer a packet of information.

　　我給每位查詢者發送了一份資料。