باعث شویم که در پول یا زمان یا کار و تلاش کس صرفه جویی شودو بی مورد صرف نشود 
Thanks for your help - it saved me a lot of work.  
 I'll lend you a bag for your trip - it'll save you buying one.  
We'll eat in a restaurant - it'll save you having to cook.