Can someone please explain how to calculate gear ratios?

Hello there! I’m generally new to Vex metal robots and was wondering if someone could explain how to calculate gear ratios. Just a general overview is fine. Thank you!

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Motor speed * (driving gear / driven gear) = RPM

For example, lets say I have a 600 RPM motor on a 36 tooth gear driving a 60 tooth gear. What RPM is that outputting?

Motor speed = 600
Driving gear = 36
Driven gear = 60
600 * 36/60 = 360 RPM