As you zip through space in your PPS $($personal propulsion suit$),$ your pulse rate as you count it is $113$ bpm $($beats per minute$).$ This high pulse rate serves as objective evidence of your excitement. However, an observer on the Moon, an expert in pulse rate telemetry, measures your pulse rate as slower. In fact, she detects only $0\mathrm{.}537$ times the rate you count and claims that you must be pretty calm in spite of everything that is going on$.$

How fast $\backslash ($ v $\backslash )$ are you moving with respect to the Moon?