Apple (China) official online store sold 242 iPads on Monday morning, 218 in the afternoon and 584 on Tuesday. How many more units were sold on Tuesday than Monday?
苹果(中国)官网在线商店星期一上午售出242台iPad，下午售出218台；星期二售出584台．星期二比星期一多售出多少台？
<gadget id="calculator">242 + 218</gadget>
<output>460</output>

<gadget id="calculator">584 - 460</gadget>
<output>124</output>

<result>124</result>