A rectangular orchard is 60 meters long and 40 meters wide. Now it is necessary to wrap 2 turns of iron wire around it (not counting the joints). How many meters is the length of the iron wire?
一块长方形果园，长60米，宽40米，现要在四周围上2圈铁丝(接头处不算)，铁丝长多少米？
<gadget id="calculator">60 + 40</gadget>
<output>100</output>

<gadget id="calculator">100 * 2 * 2</gadget>
<output>400</output>

<result>400</result>