It would depend on the date and condition of the note. In anything but very good condition, it is probably worthless.
20000 australian is worth how many euro
20000 Pesos is 1533.700 US Dollars.
http://www.measuringworth.com/uscompare/
nothing
$40,000
$85
About $274,000
1004 dollars
20000 australian is worth how many euro
20000
As at 01Dec09 GBP20,000 was worth USD33,240
The 1979 German 2 Pfennig is worth about 2 dollars depending on its condition. Some of these coins can be more valuable including the 5 Pfennig coin.
20000 Pesos is 1533.700 US Dollars.
http://www.measuringworth.com/uscompare/
nothing
$40,000
1.7524217 German Deutsche Marks