Can anyone help me translate these instructions?

[kalpana]

From here
https://blog.abysm.org/2020/03/realt...-installation/

to install the driver for my wifi dongle

lsusb output for the device is

Bus 001 Device 004: ID 0bda:b812 Realtek Semiconductor Corp. 802.11ac NIC

(LTS 20.04)