Buy 5 flowers for 30.5 yuan, Xiao Ming buys 12 flowers, and pays the flower seller 100 yuan, how much should I get back?
买5支鲜花30.5元，小明买了12支，付给卖花人100元，应找回多少元？
<gadget id="calculator">30.5 / 5</gadget>
<output>6.1</output>

<gadget id="calculator">6.1 * 12</gadget>
<output>73.2</output>

<gadget id="calculator">100 - 73.2</gadget>
<output>26.8</output>

<result>26.8</result>