text: INSERT INTO calculations (operand, operator, result) VALUES (5, 'FACTORIAL', 120);
  INSERT INTO calculations (operand, operator, result) VALUES (7, 'FACTORIAL', 5040);
  INSERT INTO calculations (operand, operator, result) VALUES (9, 'FACTORIAL', 362880);
  INSERT INTO calculations (operand, operator, result) VALUES (16, 'SQUARE_ROOT', 4);
  INSERT INTO calculations (operand, operator, result) VALUES (64, 'SQUARE_ROOT', 8);
  INSERT INTO calculations (operand, operator, result) VALUES (256, 'SQUARE_ROOT', 16);
  