…and journalists! Via Leah Libresco, the Dictionary of Numbers:
It searches the text in your browser for quantities it understands and inserts contextual statements in brackets. It might turn the phrase “315 million people” into “315 million people [≈ the population of the United States]“.
As Glen explains, he once read an article about US wildfires which mentioned that the largest fire of the year had burned “300,000 acres.” This didn’t mean much to Glen:
I have no idea how much 300,000 acres is [...] But we need to understand this number to answer the obvious question: how much of the United States was on fire? This is why I made Dictionary of Numbers.
Dictionary of Numbers helpfully informs me that 300,000 acres is about the area of LA or Hong Kong.