It is perhaps a help in considering these immense numbers of years back in "deep time," to bear in mind that one year represents the time required for Earth to orbit the sun--hence the planet has completed approximately 4,500 million orbits since the formation of the solar system.
(It; is perhaps; a help in considering these immense numbers of years back in "deep time) (Earth; to orbit; the sun) (the planet; has completed; approximately 4,500 million orbits; T:the time required)
It Earth the planet
is perhaps to orbit has completed
a help in considering these immense numbers of years back in "deep time
the sun
approximately 4,500 million orbits T:the time required