you need to convert the figure from either MHz (megahertz) or GHz (gigahertz) to cycles per second, measured in Hz (hertz). There are 1 million hertz in 1MHz and 1 billion hertz in 1GHz.
It sounds fast, but Hertz are slow. One Kilohertz (KHz) is 1,000 cycles a second or 60,000 bpm; one Megahertz (MHz) is 1,000 times that; and one Gigahertz (GHz) is 1,000 times that. Far too fast ...