How to Install Broadcom WiFi Driver in Debian 9 Stretch

How to install proprietary Broadcom wireless card driver to connect to the Internet through Wi-Fi in Debian Supported Broadcom wireless network cards: BCM4311-, BCM4312-, BCM4313-, BCM4321-, BCM4322-, BCM43142-, BCM43224-, BCM43225-, BCM43227-, BCM43228-, BCM4331-, BCM4360-, and BCM4352- lspci -n...

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