13 hands in meters

Tanya is reading a book about ponies that turn into unicorns and came across a small pony that was 13 hands tall.

A "quick" look up in Google from my phone got me to this meter to hand conversion page, which I read incorrectly because it converts meters to hands and not vice versa. Fortunately one meter is close to 10 hands so the answer of 127.952756 cm was satisfactory.

Later I looked up the real value from my PC and Google calculator told me this:

13 hands = 1.3208 meters

Now, why do I get the handy Google calculator result on my PC but not in Opera Mobile?