Complex sentence: Elvis Presley Enterprises give the figure that between 1 billion and 1.5 billion people watched the broadcast live--a highly unlikely number as the total population of the countries receiving the broadcast was 1.3 billion.
Split into simpler sentences: Elvis Presley Enterprises give the figure that between 1 billion and 1.5 billion people watched the broadcast live--a highly unlikely number. The total population of the countries receiving the broadcast was only 1.3 billion.