2 little monkeys have picked 3 bananas. How many more bananas must be picked for each little monkey to get 6 bananas?
2只小猴子已摘了3个香蕉．要使每只小猴子分到6个香蕉，还要再摘多少个香蕉？
<gadget id="calculator">6 * 2</gadget>
<output>12</output>

<gadget id="calculator">12 - 3</gadget>
<output>9</output>

<result>9</result>