A piece of square paper, cut a knife from the middle to get two rectangles, and then cut a rectangle from the middle to get two squares, and then cut a square from the middle to get two rectangles... Cut 30 times in this way, you can How many squares are obtained.
一张正方形纸片，从中间剪一刀得到两个长方形，再把一个长方形从中间剪一刀可以得到两个正方形，再把一个正方形从中间剪一刀，得到两个长方形…这样剪了30次，可以得到多少个正方形．
<gadget id="calculator">30 / 2</gadget>
<output>15</output>

<gadget id="calculator">15 + 1</gadget>
<output>16</output>

<result>16</result>