The length of a rectangular photo frame is 6.5dm, and the width is 3.2dm. To inlay aluminum strips around five such rectangular photo frames, how long should the aluminum strips be at least? (neglected at joints)
一种长方形相框的长是6.5dm，宽是3.2dm，要给5个这样的长方形相框的四周镶上铝条，至少需要多长的铝条？(接头处忽略不计)
<gadget id="calculator">6.5 + 3.2</gadget>
<output>9.7</output>

<gadget id="calculator">9.7 * 2 * 5</gadget>
<output>97</output>

<result>97</result>