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A right rectangular prism is packed with cubes of side length fraction 1 over 5 inch. If the prism is packed with 15 cubes along the length, 6 cubes along the width, and 5 cubes along the height, what is the volume of the prism?

fraction 2 and 3 over 10 cubic inches
fraction 3 and 3 over 5 cubic inches
fraction 7 and 1 over 5 cubic inches
fraction 7 and 1 over 10 cubic inches