A rectangular tablecloth is 65 cm long and 45 cm wide. How many centimeters should the lace be around the tablecloth?
一个长方形的桌布，长65厘米，宽45厘米．要在桌布的四周镶上花边，花边长多少厘米？
<gadget id="calculator">65 + 45</gadget>
<output>110</output>

<gadget id="calculator">110 * 2</gadget>
<output>220</output>

<result>220</result>