The gauge on the yarn seems to be 20 stitches over 4 inches on number 3 1/2 needles. Since it's French, that could be mm, or European sizing, though.
You've got 2280 yards of the stuff, so you could make just about any sized sweater with it. Or a large shawl.
I found these in French, maybe you can put it through a translator program and see if they're useable.
I just looked back and :doh: crochet, of course, is the same in both languages. You can knit a shawl with it, though.