I have a 7x50 Orion Scenix Astronomy Levitra pill whithout prescription eyepiece  pair of binoculars. I'm not happy with the 7x magnification.
I thought that if I can get a tiny monocular, say 3X20, then I can put it in front of one of the binoculars' eyepieces. Hopefully getting a 7*3=21x magnification.

Is this possible?
Any recommendation on the monocular(aperture, magnification, brand etc)

Thanks in advance.

I am looking for a nice pair of astronomy binoculars review for my class. I would like something with a nice size aperture maybe within the price range of 40-50.00. Thanks! (a link would be nice)