In short, I don't think there is such a thing as abstract
things. They're real and measurable, as jots on a piece of
paper, on a computer screen, spoken as words - and ultimately as
jigglies of some kind within a human brain, which is in a body
which is acting in the world.
The separation between the two, I believe, is artificial. And
yes, this does, in some sense, make everything real that we can
conceive - in *some* fashion, because we're not conceiving of
things from outside of this Universe but from within it.
