Earth's oceans have an average depth of 3800 m, a total area of 3.63×108 km2, and an average concentration of dissolved gold of 5.8×10−9 g L. If a recent price of gold was $239.00 troy oz , what is the value of gold in the oceans? ( 1 troy oz = 31.1 g) Be sure your answer has the correct number of significant figures. Note: Reference the SI prefixes and Unit conversions for derived SI units tables for additional information.