Text Messaging (POTW)

From http://cemc.uwaterloo.ca/resources/potw/2012-13/POTWB-12-NN-20-P.pdf, used with permission.

"Emeka is one of many Canadians who send texts to their friends. For example, in September 2009 about 3 billion texts were sent by the (approximately) 10 million Canadians who text.

a) If the other months of 2009 were similar, how many texts were sent in total in 2009? (answer in billions, rounded to one decimal place)
b) About how many million texts were sent each day? (answer in millions, rounded to one decimal place)
c) If Emeka texts like an average Canadian, how many texts does she send in a year? (rounded to the nearest integer)
d) If each text message takes about 30 seconds to compose and send, about how much time does Emeka spend texting in a year?" (rounded to one decimal)

Submit your file as "Full Name CourseCode Text Messaging".

For extra challenge, use the provided doctest file to solve this challenge. (http://pastebin.com/fBSUXYMu)