As of December 3, 2011, A US Dollar is worth 0.98 Australian Dollars. The exchange rate has recently dropped (on the US side), as just a few days ago a US Dollar was worth about 1.05 Australian...
To do this you will want to visit www.bls.gov. This is the government site, The Bureau of Labor Statistics. You would then want to locate the Consumer Price Index (CPI) for both 1845 and the latest...
Several countries use currency called a pound, but Britain is by far the most recognized one in the US. However exchange rates change every day so any answer posted here would be out of date almost...