I never win at the lottery because I've never played. My grandmother has never won at the lottery either, but has played regularly, betting the same numbers, for decades. Apparently, that's the whole point and so Cockeyed.com has put together a Mega Millions lottery simulator to help its players understand just what long odds they face.
You can try the simulator here. You'll be able to try the same numbers over and over, simulating playing twice a week for a year or 10. You'll never win.
In the 5723134 times this simulation has run, players have won $115,311 And by won I mean they have won back $115,311 of the $5,723,134 they spent (2%).