That's why they patent the idea of having a general purpose computer do the math. And no, they don't care if the novel part isn't patentable subject matter and

That's why they patent the idea of having a general purpose computer do the math. And no, they don't care if the novel part isn't patentable subject matter and the patentable subject matter has already been invented. That's a pretty well-established dodge, except insofar as the recent Supreme Court decisions impact it.