Make a central idea if don't know search up then answer pls

The central  idea is the central,  unifying element of the story, which ties together all of the  other elements of fiction used by the author to tell the story. The central idea can be best described as the dominant  impression or the universal, generic truth found in the story.

Explanation:

you would times this by how many days there are in a year 365*400=$146000