The exchange rate of the Bank of China is 6.30 yuan for 1 US dollar. Uncle bought a book for Fang Fang in the United States, and the price was 4.5 US dollars. How much is it in RMB?
中国银行的兑换率是1美元兑换人民币6.30元，叔叔在美国给方方买了一本书，定价是4.5美元，折合人民币是多少元？
<gadget id="calculator">4.5 * 6.3</gadget>
<output>28.35</output>

<result>28.35</result>