Whats wrong with the powerprep?

[Done]

Hey,

i made my first powerprep today and i had two problems:

a) The calculator gave me strange results. 0.23*0.47 = 1081 instead of 0.1081...is that common? Moreover: 73/3 = 42.x i typed it 4 times in because i could not believe it???

And at the end it just said error. Can i just use it a certain amount of times?

The y in the pic. is it just wrong or was it a "trick" of course it is clear that the median has to be 10 regardless the value of y, but i am still wondering?

[Done]

hi,

would somebody please be so nice and tell me if the things happened with the calculator are typical for the GRE, especially 0.23*0.47 = 1081 instead of 0.1081, or if it was just something my computer messed up?