count_slowly = fn (multiplier: int) {
	i = 0

	while i < 10 {
		sleep_time = i * multiplier;

		thread.sleep(sleep_time)
		io.write_line(i as str)

		i += 1
	}
}

async {
	count_slowly(50)
	count_slowly(100)
	count_slowly(200)
	count_slowly(250)
}