Arrange 16 small squares with a side length of 1 cm in a row, what is the perimeter of the figure in cm?
把16个边长是1厘米的小正方形排成一排，排成后的图形周长是多少厘米．
<gadget id="calculator">1 * 16</gadget>
<output>16</output>

<gadget id="calculator">16 + 1</gadget>
<output>17</output>

<gadget id="calculator">17 * 2</gadget>
<output>34</output>

<result>34</result>