There is a magical tree that used to have only one branch. In the first year, it grows a branch. In the second year, each branch grows a branch. In the third year, each branch grows a branch again. Calculate like this , how many branches are there in the tree in the fifth year?
有一颗神奇的树，原来只有一个树枝，第一年长出一个树枝，第二年每个树枝分别长出1个树枝，第三年每个树枝又都分别长出1个树枝，照这样计算，第五年这棵树上一共有几个树枝？
<gadget id="calculator">2 ** 5</gadget>
<output>32</output>

<result>32</result>