The school has 5 boxes of table tennis balls, 8 in each box, and later bought 10 more. How many are there now?
学校有5盒乒乓球，每盒8个，后来又买来10个．现在一共有多少个？
<gadget id="calculator">5 * 8</gadget>
<output>40</output>

<gadget id="calculator">40 + 10</gadget>
<output>50</output>

<result>50</result>