That math is correct. We have no immunity, there are ~330 million people in the United States, >30% of us will catch it, and, barring advanced medical treatment

That math is correct. We have no immunity, there are ~330 million people in the United States, >30% of us will catch it, and, barring advanced medical treatment > 1% of those will die. 330m x 0.3 x 0.01 = 1m . If those lower bounds are exceeded, it will be more.