+2
Leaving aside the wisdom of the package, I don't think it's supposed to be that one month = $2 trillion. For one, it's supposed to be preemptive (people are going to need this soon). For another, only a fraction of it is the cash payments, half or more is for things like Small Business Loans, which are meant to help small businesses weather, in theory, a few months. Ditto on the larger industrial bailouts.
And, of course, there's a lot of reason to believe it's the initial shock/disruption that's the most in need of being absorbed, so even if this were meant to just cover a month or so, it would be covering the "worst" month, in theory.
Anyway, we "find" the money by taking on debt, which means issuing more treasury bonds, which are paid back over time to the people who buy them. It's basically like taking out a loan, which is common in times of war or disaster. The biggest cause for concern is that our debt was pretty high even in peacetime before this, which has become the new normal.