Uh oh! Wolfram|Alpha doesn't run without JavaScript.
Please enable JavaScript. If you don't know how, you can find instructions
here
.
Once you've done that, refresh this page to start using Wolfram|Alpha.
(5 billion years / (4 hours/day * 3 months)) / (1% * (speed of light)^2 / (3200 calories/pound))
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random