* Mars' Orbital Period: Mars takes approximately 687 Earth days to orbit the sun.

* Time Since 1776: From 1776 to today (let's say 2023) is roughly 247 years.

* Calculating Orbits: Divide the total time in days (247 years * 365 days/year = 90,055 days) by Mars' orbital period: 90,055 days / 687 days/orbit = 131.1 orbits

Therefore, Mars has orbited the sun approximately 131 times since 1776.