Here's why:

* Earth orbits the sun once a year. So, to figure out how many times Earth orbited the sun between 140 CE and now, we need to know how many years have passed.

* We need a specific end date. You haven't provided a specific year to count to. For example, if you want to know how many orbits have happened between 140 CE and 2023 CE, we can calculate that.

To get the answer, you would:

1. Subtract 140 from the year you want to know about. For example, 2023 - 140 = 1883

2. That number is how many times Earth has orbited the sun.

Let me know if you want to know the number of orbits for a specific year!