Use a regualr expression to extract all the variables (assuming a form of \w+), store them in an hash along with an auto-generated variable name (eg $a,$b..).
Use another regexp to replace all variables with the new names and replace the operators with the corresponding perl operator (eg s/\*/ && /g).
Perform a series of nested loops, one for each variable, and eval the expression.
Note that this is probably not what your teacher wants from you!
: Do not act incautiously when confronting a little bald wrinkly smiling man.
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