Return math results (and perhaps other instant answers) in the suggestions API.
I believe the impact on existing workflows to be minimal.
While I was using Google, I would often type a query into the omnibox and get the answer instantly without pressing enter. In the case of math questions, I would quickly switch to the answer of my first statement with the arrow keys and continue typing my next statement. This workflow was quite nice for me, as I usually already have a browser open, and opening a calculator or other dedicated app was slower.
