The perimeter of a rectangular piece of paper is 16 centimeters. Three such pieces of paper can be put together to form a square piece of paper. What is the perimeter of the square piece of paper in centimeters?
一张长方形纸片的周长是16厘米，三张这样的纸片恰好可以拼成一张正方形纸片，拼成的正方形纸片的周长是多少厘米．
<gadget id="calculator">1 + 3</gadget>
<output>4</output>

<gadget id="calculator">16 / 2 / 4</gadget>
<output>2</output>

<gadget id="calculator">2 * 3</gadget>
<output>6</output>

<gadget id="calculator">6 * 4</gadget>
<output>24</output>

<result>24</result>