Ah yes. Never trust a mathematician to do sums. Though this is a bit embarrassing, this is 10^sth * 15^2, I really ought to know my squares. Getting the expone

Ah yes. Never trust a mathematician to do sums. Though this is a bit embarrassing, this is 10^sth * 15^2, I really ought to know my squares. Getting the exponent right is a minor detail though.