Each rose is 1.8 yuan, and each lily is 2.5 yuan. Xiaoqiao bought 5 roses and 3 lilies, how much did she spend in total?
玫瑰花每只1.8元，百合花每只2.5元．小巧买了5只玫瑰花和3只百合花，一共用去多少元？
<gadget id="calculator">1.8 * 5</gadget>
<output>9</output>

<gadget id="calculator">2.5 * 3</gadget>
<output>7.5</output>

<gadget id="calculator">9 + 7.5</gadget>
<output>16.5</output>

<result>16.5</result>