val deferred1 = async {
            var i = 0
            while (i < 10) {
                delay(500)
                i++
            }

            "result1"
        }

        val deferred2 = async {
            var i = 0
            while (i < 10) {
                delay(1000)
                i++
            }

            "result2"
        }

        val result1 = deferred1.await()
        val result2 = deferred2.await()

        println("$result1 , $result2") // result1 , result 2 출력