Codewars w Sandhika 15

function basicOp(operation, value1, value2) {
  return eval(value1 + operation + value2);
}

console.log(basicOp("+", 4, 7), 11);
console.log(basicOp("-", 15, 18), -3);
console.log(basicOp("*", 5, 5), 25);
console.log(basicOp("/", 49, 7), 7);