Well, a verse taken out of context is not amounting to much. Besides, talking about God stretching the heavens like a tent over the earth (an image quite usual for desert dwelling people) is quite different from the expansion of the space itself like it's observed in the known universe. If the Bible could include some mathematical calculations, I would be much more impressed.Job chap. 38 is good from some of the earlier stuff we were talking about, Gen. wise, but I was off by a book or two, I was thinking of Isaiah 40:22 (tho there may also be another one), talking about God stretching out the heavens, which would be the literal universe since he's talking about what the earth is hanging in... or talking from a perspective outside earth...
Considering the state of mathematics at that time, I don't know how we could reasonably expect calculations. Imagery is about all that I think we could possibly expect.