How to wash najas clothes in washing machine?

Recently I heard that when najasa (impurity[**ejaculation**]) has been touched with the clothes after **masturbation**, you can wash them by simply putting it in washing machine with high amount of water and detergent. Then after it wash, rinse and dry, **it becomes pure and you can use them again for praying**. I want to know that if it is true. If it is not true, then I would like to know how to wash Najis clothes in washing machine. I also read that after ejaculation **when the semen dries** you can do the same steps as I told earlier. So, all I want to know is **how to wash dried and wet Najis clothes which was mixed/touched with semen, is it okay to wash in a washing machine with high amount of water and detergent or it should be done in other ways**?