A light-year is the distance that light travels in one year, which is about 5.88 trillion miles.

There are approximately 3.72 x 10^20 inches in one light-year.

This conversion is typically used for astronomical purposes to understand incredibly large distances, as inches are a very small unit compared to a light-year.

100,000,000 inches is an extremely small distance when compared to astronomical scales like light-years. It's less than one trillionth of a light-year.