If 2 bananas can be exchanged for 6 apples, and 4 apples can be exchanged for 16 pears, then how many pears can be exchanged for 3 bananas?
如果2只香蕉能换6个苹果，4个苹果能换16个梨，那么3只香蕉能换多少个梨．
<gadget id="calculator">6 / 2</gadget>
<output>3</output>

<gadget id="calculator">16 / 4</gadget>
<output>4</output>

<gadget id="calculator">3 * 3 * 4</gadget>
<output>36</output>

<result>36</result>