A set of children's clothing uses 2.7 meters of cloth. How many meters of cloth do you need to make 40 sets of such children's clothing?
一套童装用布2.7米，做这样的童装40套，需要用布多少米？
<gadget id="calculator">2.7 * 40</gadget>
<output>108</output>

<result>108</result>