There are 1 bouquet of lilies, roses, and chrysanthemums. Choose one or several of them to form a flower basket. How many different flower baskets can be formed.
有百合、玫瑰、菊花各1束，选其中的一束或几束组成一个花篮，可以组成多少种不同的花篮．
<gadget id="calculator">2 + 1</gadget>
<output>3</output>

<gadget id="calculator">3 + 3 + 1</gadget>
<output>7</output>

<result>7</result>