over 1300 people are dying daily on average of Covid in the U.S.

This means 39,000 people are dying per month of Covid in the U.S.

And 

if this continues for a year at this particular rate it is: 474,500 

So, even if we only had lost 600,000 so far (even though it is much more than this)

It means that potentially at least 674,500 will die if this rate continues on through the next 365 days.