A bright orange ceramic "Fiestaware" plate is found to have an activity of 12.49 disintegrations per second (Becquerels or Bq), due to the uranium-238 used in the pigment. The half life for decay of uranium-238 is 4.5 x 109 years. Assuming that uranium-238 is the only radioactive species present, how many atoms of uranium-238 does this represent? (Note: there are 3.1536 x 107 seconds in one year.)