Someone's making a packet out of it.
有人从中狠赚了一笔。
Cook the rice according to instructions on the packet.
按照包装袋上的说明煮饭。
You could save yourself a packet
你能为自己省一大笔钱。
It'll cost you a packet
那会花你一大笔钱。
He went out to buy a packet of cigarettes.
他出去买包烟。
I send each inquirer a packet of information.
我给每位查询者发送了一份资料。