sclass AI_CalculationBot > AttractorBot {
  bool greet = true;
  
  run {
    if (greet) say("I can calculate things for you");
  }
  
  // CONFIG
  
  class CalcAttractor > Attractor {
    S op;
    L<Number> arguments;
    
    public bool matches(S s) {
      new Matches m;
      
      if "* x *"
        if (isInteger($1) && isInteger($2)) {
          op = "mul";
          arguments = ll(bigint($1), bigint($2));
          true;
        }

      false;
    }
    
    run {
      say(str(foldl_noSeed mul(arguments)));
    }
  }
  
  *() {
    standardAttractors(new CalcAttractor);
  }
}