Mom wants to sew lace around five square cushions with a side length of 6 decimeters. How long is the lace needed?
妈妈要将5个边长是6分米的正方形靠垫四周缝上花边，需要准备多长的花边才够用？
<gadget id="calculator">6 * 4 * 5</gadget>
<output>120</output>

<result>120</result>