What a stupid (an inaccurate and uncited) claim! It doesn't take a middle class to produce shells in a factory! It takes a labor force forced onto the line to keep producing. In a pinch, throwing shells Iran sent at objectives they can't take will do:
https://www.fdd.org/analysis/2023/04/24/iran-sends-russia-artillery-ammunition/
Second, your phony argument - lots of shells = winning! - is beyond idiotic. Russia has not only been running its ammo supplies into the ground, it's using obsolete tanks and barely-trained conscripts to replace the entire army it sent into Ukraine last year! Even Putin is ready to capitulate!
See that? It's called a citation. You're supposed to do that when citing claims or figures. Then again, this "I've seen" or "I've heard people say" is what you do when you're throwing shit you made up at the wall and hope it will stick. Just ask Trump!