Xiaohua used wire to surround a square with a side length of 4 cm. If this wire is used to surround a rectangle with a width of 3 cm, what is the length of the rectangle in cm?
小华用铁丝围了一个边长是4厘米的正方形，如果用这根铁丝围一个宽是3厘米的长方形，这个长方形的长是多少厘米？
<gadget id="calculator">4 * 4</gadget>
<output>16</output>

<gadget id="calculator">16 / 2</gadget>
<output>8</output>

<gadget id="calculator">8 - 3</gadget>
<output>5</output>

<result>5</result>