The length and width of a rectangle are two prime numbers, the area is 35 square centimeters, and the perimeter is how many centimeters.
长方形的长和宽是两个质数，面积为35平方厘米，周长为多少厘米．
<gadget id="calculator">5 + 7</gadget>
<output>12</output>

<gadget id="calculator">12 * 2</gadget>
<output>24</output>

<result>24</result>