how many nano seconds are in 500 light years

Question: how many nano seconds are in 500 light years
- Keywords:
  light years,
  physics,
  space
Asked by anon-247479 to Martha, Jennifer, Dan, Ben, Baptiste on 9 Mar 2020.
- Baptiste Ravina answered on 9 Mar 2020:
  
  Well, let me do a quick computation: one nanosecond is 10^-9 seconds, 500 divided by… waaaait a minute… Light years are a unit of distance (how far light travels in a year), nanoseconds a unit of time.
  
  +10 points for trying to trick me, -5 for not succeeding.

Question: how many nano seconds are in 500 light years