When you can tell me how to quantify blessings, graces, and inspirations, and then attribute them directly to the Divine Mercy Chaplet, then there may be a way to answer that question.
It is also not “multiple times a day”, but rather “prayed well”. The same applies to all prayers.
Edit: I will say though that for me personally, it seems that specific temptations are reduced in strength when prayed every day. Whether that is specifically from the Divine Mercy Chaplet or just daily prayer, I don’t know.