How to charge for Unicom's 5G refreshing ice cream when the traffic exceeds 159 yuan?

The monthly fee for 5G refreshing ice cream is 159 yuan, and the package includes 700 minutes of domestic voice (except Hong Kong, Macao and Taiwan), and the domestic traffic is 40G. There is no charge for domestic answering, including caller ID. Gold member of Unicom PLUS, after exceeding the package, the domestic voice is 0. 15 yuan/min, SMS and MMS are 0. 1 yuan/piece, and the domestic traffic is 3 yuan/g. Up to 3 supplementary cards can be handled, and the monthly function fee of the supplementary cards is 10 yuan/card.