pencil costs 0.70 yuan, and a pen costs 5.60 yuan. How much will it cost to buy a pencil and two pens?
一枝铅笔0.70元，一根钢笔5.60元．买一枝铅笔和两枝钢笔一共要付多少元？
<gadget id="calculator">5.6 * 2</gadget>
<output>11.2</output>

<gadget id="calculator">0.7 + 11.2</gadget>
<output>11.9</output>

<result>11.9</result>