Teacher Li traveled from Nanyang to Zhengzhou by bicycle, with an average of 75 kilometers per day. After three days, he was still 62 kilometers away from Zhengzhou. How many kilometers is it from Nanyang to Zhengzhou?
李老师骑自行车从南阳到郑州旅行，平均每天行75千米，行了3天后离郑州还有62千米．从南阳到郑州有多少千米？
<gadget id="calculator">75 * 3</gadget>
<output>225</output>

<gadget id="calculator">225 + 62</gadget>
<output>287</output>

<result>287</result>