A child randomly draws 6 apples or oranges, how many ways are there to draw at least 3 apples together?
一位小朋友任意画了6个苹果或橘子，那么其中至少有3个苹果连在一起画的方法有多少种．
<gadget id="calculator">3 * 3</gadget>
<output>9</output>

<gadget id="calculator">2 * 3</gadget>
<output>6</output>

<gadget id="calculator">4 + 9 + 6 + 1</gadget>
<output>20</output>

<result>20</result>