The grain shop originally had 500 kilograms of rice, but sold 245 kilograms. How many kilograms were sold less than the rest?
粮店原来有500千克大米，卖出了245千克．卖出的比剩下的少多少千克？
<gadget id="calculator">500 - 245</gadget>
<output>255</output>

<gadget id="calculator">255 - 245</gadget>
<output>10</output>

<result>10</result>