There are 20 drawers, and there are at least 26 apples in the drawer with the most apples. What is the minimum number of apples in total?
有20个抽屉，保证苹果最多的抽屉里至少有26个苹果，则总苹果数最少有多少个．
<gadget id="calculator">26 - 1</gadget>
<output>25</output>

<gadget id="calculator">25 * 20</gadget>
<output>500</output>

<gadget id="calculator">500 + 1</gadget>
<output>501</output>

<result>501</result>