In Perl, and I believe pretty much most of the languages out there, you give precedence to an equation by encapsulating it in parentheses. Consider the following: 5 + 9 * 2 = 28 5 + (9 * 2) = 23 By wrapping the equation 9 * 2 in parentheses, we force it to be calculated first, giving a different result. Even though you don't deserve it, here it is in code: #!/usr/bin/perl $complex = (9*2)  (2*9) + (180/10) * 10 * (2 * 5) / 100; print $complex; This gives us the result: 18 Exponentially Yours The exponential operator (**) allows you to get the power of a number. For instance, 5**100 is 5 to the hundredth power, or 7.88860905221012e+069. Or simply put, some ridiculously crazy number. Something simpler to comprehend might be 3**3, which is 3 to the third power or 3 * 3 * 3 (which of course equals 27). Here it is in code: #!/usr/bin/perl $power = 0**10; $powera = 1**10; $powerb = 2**10; $powerc = 3**10; $powerd = 4**10; print $power . "\t" ; print $powera . "\t"; print $powerb. "\t" ; print $powerc. "\t" ; print $powerd. "\t" ; And the result is... 0 1 1024 59049 1048576
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