you might want to consider rounding before you take the int. Because your denominator is pretty large, you shouldn't get any fuzz issues, but you do want to add a half to make sure you get the correct second decimal point.

int EXPR

Returns the integer portion of EXPR. If EXPR is omitted, uses $_. You should not use this function for rounding: one because it truncates towards 0, and two because machine representations of floating point numbers can sometimes produce counterintuitive results. For example, int(-6.725/0.025) produces -268 rather than the correct -269; that's because it's really more like -268.99999999999994315658 instead. Usually, the sprintf, printf, or the POSIX::floor and POSIX::ceil functions will serve you better than will int().

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