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Angular Measure 2

Let us say that at their closest approach, Mars is 54.6 million kilometers from the Earth. Earth has a diameter of 12,742 km.
How large (in arcseconds) will the Earth look from Mars? (rounded to the nearest hundredth)
Here is an image of Earth taken from the surface of Mars by the Spirit rover:
  • Your answer should be
  • an integer, like 66
  • an exact decimal, like 0.750.75
  • a simplified proper fraction, like 3/53/5
  • a simplified improper fraction, like 7/47/4
  • a mixed number, like 1 3/41\ 3/4