# TI-89 Basic - 39 * 0.8 = 31.2

    Input y:Input x:Disp ln(((e^y)^.01)^x))

Works by inputting the two numbers, then using the logarithm properties to compute `x * y / 100`.

If I can assume input from placement in global variables `x` and `y`, then this is much shorter, for a score of **17 * 0.8 = 13.6**:

    ln(((e^y)^.01)^x)

Without bonus (**12**):

    ln((e^.2)^x)

But if it needs to be wrapped in a function, then this works (**38** chars, for **30.4**):

    :f(x,y):Func:ln(((e^y)^.01)^x):EndFunc