Earthquake intensity is measured by the Richter scale. The formula for the Richter rating of a given quake is given by "R = log[I/I0]" where I0 is the "threshold quake", or movement that can barely be detected, and the intensity I is given in terms of multiples of the threshold intensity. An earthquake was reported to have a Richter number of 5.99. How does the intensity of the earthquake approximately compare with the reference intensity?