Dad bought some chocolates and distributed them to his elder brother and younger brother. The elder brother ate 4 and the younger brother ate 6. They all ate half of each. How many chocolates did Dad buy?
爸爸买了一些巧克力，分给哥哥和弟弟吃，哥哥吃了4颗，弟弟吃了6颗，正好都吃了各自的一半，爸爸买回来多少颗巧克力．
<gadget id="calculator">4 * 2</gadget>
<output>8</output>

<gadget id="calculator">6 * 2</gadget>
<output>12</output>

<gadget id="calculator">8 + 12</gadget>
<output>20</output>

<result>20</result>