A pencil is 0.70 yuan, which is 5.60 yuan cheaper than a pen. How much will it cost to buy a pencil and a pen?
一枝铅笔0.70元，比一根钢笔便宜5.60元，买一枝铅笔和一枝钢笔一共要付多少元？
<gadget id="calculator">0.7 + 5.6</gadget>
<output>6.3</output>

<gadget id="calculator">0.7 + 6.3</gadget>
<output>7</output>

<result>7</result>