Горутины в цикле range по int

1package main2 3import (4	"fmt"5	"sync"6)7 8func main() {9	total := 1210	group := sync.WaitGroup{}11	group.Add(total)12	for idx := range total {13		go func() {14			fmt.Println(idx * 7)15			group.Done()16		}()17	}18	group.Wait()19}