If the perimeter of a rectangle is 30 cm, if the length is increased by 3 cm and the width is increased by 2 cm, what is the increase in the perimeter of the rectangle?
一个长方形的周长是30厘米，如果长增加3厘米，宽增加2厘米，则这个长方形的周长增加多少厘米
<gadget id="calculator">3 + 2</gadget>
<output>5</output>

<gadget id="calculator">5 * 2</gadget>
<output>10</output>

<result>10</result>