What is Inflation?

Christopher Pang asks (and answers) that question. This line stuck out:

The latest country to fall to hyperinflation was Zimbabwe, where inflation rate reported to be at 89.7 sextillion (10^21) percent in 2008, about 14% increase in prices daily.

Ouch. I didn't even know 'sextillion' was a unit.

[HT: Astrid]