code: private ExprKraken parseMulExpr()
    {
      ExprKraken left = parseSimpleTerm();
  
      while (true) {
        Token token = scanToken();
  
        switch (token) {
        case STAR:
          left = new BinaryExpr(BinaryOp.MUL, left, parseSimpleTerm());
          break;
        case DIV:
          left = new BinaryExpr(BinaryOp.DIV, left, parseSimpleTerm());
          break;
        case MOD:
          left = new BinaryExpr(BinaryOp.MOD, left, parseSimpleTerm());
          break;
  
        default:
          _token = token;
          return left;
        }
      }
    }
docs: Parses a mul/div expression