Can someone help me out pls GOlang

Question

package main
import "fmt"
//define the download() function
func main() {
ch1 := make(chan int)
ch2 := make(chan int)
ch3 := make(chan int)
var s1, s2, s3 int
fmt.Scanln(&s1)
fmt.Scanln(&s2)
fmt.Scanln(&s3)
go download(s1, ch1)
go download(s2, ch2)
go download(s3, ch3)
//output the sum of all results
fmt.println(s1+s2+s3)
}
The protect downloader

Answer 1

Ejeh Wayne ,
you need to write the download function and put all together. if you have done this, please put your code to playground and link it here.
thank you very much!

Answer 2

Lothar u can put it in play ground and link it here