Buy 5 flowers for 29.5 yuan, Xiao Ming buys 12 flowers, and pays the flower seller 100 yuan, how much should I get back?
买5支鲜花29.5元，小明买了12支，付给卖花人100元，应找回多少元？
<gadget id="calculator">29.5 / 5</gadget>
<output>5.9</output>

<gadget id="calculator">5.9 * 12</gadget>
<output>70.8</output>

<gadget id="calculator">100 - 70.8</gadget>
<output>29.2</output>

<result>29.2</result>