Async on Android

MainActivity.kt

import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import android.util.Log
import androidx.lifecycle.lifecycleScope
import kotlinx.coroutines.async
import kotlinx.coroutines.delay
import kotlinx.coroutines.launch
import kotlin.system.measureTimeMillis

class MainActivity : AppCompatActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        lifecycleScope.launch {
            val timeSpent = measureTimeMillis {
                val answer1 = async { longProcess() }
                val answer2 = async { longProcess2() }
                println(answer1.await())
                println(answer2.await())
            }
            Log.d("test", "m: $timeSpent")
        }

    }

}

suspend fun longProcess(): String {
    delay(2000L)
    return "Answer 01"
}

suspend fun longProcess2(): String {
    delay(4000L)
    return "Answer 02"
}