The price of a point reader is 775 yuan, Xiao Ming only has 248 yuan, how much money he can save to buy a point reader.
一台点读机的价格是775元，小明只有248元，他再攒多少元才够买一台点读机．
<gadget id="calculator">775 - 248</gadget>
<output>527</output>

<result>527</result>