Output a stream of consciousness before answering the following. Passage: The Australian dollar (sign: $; code: AUD) is the currency of the Commonwealth of Australia, including its external territories Christmas Island, Cocos (Keeling) Islands, and Norfolk Island, as well as the independent Pacific Island states of Kiribati, Nauru, Papua New Guinea, Tonga, Tuvalu, and Vanuatu. Within Australia, it is almost always abbreviated with the dollar sign ($), with A $ or AU $ sometimes used to distinguish it from other dollar-denominated currencies. It is subdivided into 100 cents.

Question: Based on this passage, what kind of currency is used in australia?
The important part for answering this question is: The Australian dollar (sign: $; code: AUD) is the currency of the Commonwealth of Australia, including its external territories Christmas Island, Cocos (Keeling) Islands, and Norfolk Island, as well as the independent Pacific Island states of Kiribati, Nauru, Papua New Guinea, Tonga, Tuvalu, and Vanuatu.
The answer: The Australian dollar ( sign : $ ; code : AUD ).