A pile of apples, 10 per person, 20 more; 12 per person, 8 more. How many apples are there in total?
一堆苹果，每人10个，多20个；每人12个，多8个．一共有多少个苹果？
<gadget id="calculator">20 - 8</gadget>
<output>12</output>

<gadget id="calculator">12 - 10</gadget>
<output>2</output>

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

<gadget id="calculator">6 * 10</gadget>
<output>60</output>

<gadget id="calculator">60 + 20</gadget>
<output>80</output>

<result>80</result>