Async.kt

fun main() = runBlocking {
    val one = async { taskOne() }
    val two = async { taskTwo() }
    
    val result = one.await() + two.await() // 10 + 20
}

suspend fun taskOne(): Int {
    delay(100L) 
    return 10
}

suspend fun taskTwo(): Int {
    delay(400L) 
    return 20
}