Math Quiz: NYT Learning Network

Through Math for America, I am part of an on-going collaboration with the New York Times Learning Network.  My latest contribution, a Test Yourself quiz-question, can be found here:

https://learning.blogs.nytimes.com/2012/01/11/test-yourself-math-jan-11-2012/

This problem is related to worldwide caviar production.  What is the total worth of all the caviar produced in the world in one year?