Who says you can't use maths in your daily life?

Pro-tip on pi-tips: this will come off as even more clever if you actually ordered pie. Or a pi pie.

This little gem comes courtesy of redditer gamehead200. And for those of you complaining that the server got stiffed on the tip you're right; as password_is_pi pointed out, gamehead200 still owes:

$0.0015926535897932384626433832795
0288419716939937510582097494459230
7816406286208998628034825342117067
98214808651 32823066470938446095505
82231725359408128481117450284102701
93852110555964462294895493038196442
88109756659334461 28475648233786783
16527120190914564856692346034861045
432 6648213393607260249141273724587
006606315588174881520920 9628292540
9171536436789259036001133053054882
04665213841 46951941511609433057270
36575959195309218611738193261179310
51185480744623799627495673518857527
24891227938183011 949129833673362440
65664308602139494639522473719070217
98 609437027705392171762931767523846
7481846766940513200056 8127145263560
82778577134275778960917363717872146
8440901 224953430146549585371050792
2796892589235420199561121290 219608
64034418159813629774771309960518707
21134999999837 297804995105973173281
6096318595024459455346908302642522...

Who says you can't use maths in your daily life?

...oh you got the joke? Okay, I'll stop. [reddit]