Which expression can be used to convert 80 US dollars (USD) to Australian dollars (AUD)?

1 USD = 1.0343 AUD
1 AUD = 0.9668 USD

80 U S D times StartFraction 0.9668 U S D Over 1 A U D EndFraction
80 U S D times StartFraction 1.0343 U S D Over 1 A U D EndFraction
80 U S D times StartFraction 0.9668 A U D Over 1 U S D EndFraction
80 U S D times StartFraction 1.0343 A U D Over 1 U S D EndFraction

80 USD times StartFraction 1.0343 AUD Over 1 USD EndFraction