https://www.youtube.com/watch?v=7N73CrrPxB0
Interest rates can only remain low if the price of Gold is kept artificially low according to Larry Summers: https://www.nber.org/papers/w1680.pdf
If the US were to return to a Gold standard what would it be priced at? A rough calculation would include how much it would cost to pay off the National Debt, specifically how much each of us owe:
The National Debt/The US Population = $23 Trillion/350 Million = $65,714