How to replace gears in an Audi 80?

I need to replace the gears in my Audi 80 but I'm not sure where to start. Can anyone provide some guidance on the process and necessary tools for this task?

To replace the gears in an Audi 80, you will need to first remove the transmission from the car. This can be done by disconnecting the battery, draining the transmission fluid, and unbolting the transmission from the engine. Once removed, you can access the gears and replace them as needed. Remember to properly torque all bolts and refill the transmission fluid before driving the car again.