I’m 24, live with my mom and pay rent — I think I’ll need $2 million in retirement. How do I save that much?

Hello, 

I’m hoping you could help me get an idea of how much I need to earn monthly in order to save enough money for retirement. 

I’m 24 years old, I only work part time and live with my mother. Rent is about $625, my monthly expenses are $500, groceries are $300, and I save $200 a month. We split our expenses. 

As…