Mom wants to make a TV cover with a length of 60cm, a width of 50cm, and a height of 45cm. If you want to inlay the front of the TV cover with lace, how long is the lace?
妈妈要做一个长60cm，宽50cm，高45cm的电视机罩，若要给这个电视机罩的正面一周镶上花边，需要多长的花边？
<gadget id="calculator">60 + 45</gadget>
<output>105</output>

<gadget id="calculator">105 * 2</gadget>
<output>210</output>

<result>210</result>