Mom goes to the market to buy fruit. She first buys 2.5kg of apples for 12.5 yuan, and plans to buy 3kg of oranges. The unit price of oranges is 1.6 times that of apples. How much should I pay for oranges? ．
妈妈去市场买水果，她先花了12.5元买了2.5kg苹果，还准备买3kg橙子，橙子单价是苹果的1.6倍，买橙子应付多少钱？．
<gadget id="calculator">12.5 / 2.5</gadget>
<output>5</output>

<gadget id="calculator">5 * 1.6 * 3</gadget>
<output>24</output>

<result>24</result>