Worker.kt

object Worker {
    var total = 0

    fun accumulate() {
        for (i = 0; i < 10000; i++) {
            total = total + 1
        }
    }

    fun doWork() {
        for (j = 1; j <= 5; j++) {
            val t = thread {
                accumulate()
            }        
        }
    }
}

fun main() {
    Worker.doWork()
    println(Woker.total)
}