Amazon.com's A9 has joined other web engines in offering access to an online calculator that's accessible from any A9 search box. Results appear at the top of a web page results list. You'll spot an icon of an abacus located next the result. This page contains a examples of what the calculator offers. I'm betting that more special features and shortcuts are in the works at A9.
Optimising Digital Marketing Campaigns with Search, Social and Analytics
At SES London (9-11 Feb) you'll get an overview of the latest tools, tips, and tactics in Paid, Owned, Earned, Integrated Media and Business Intelligence to streamline your marketing campaigns in 2015. Register by 31 October to take advantage of Early Bird Rates.