In order to celebrate New Year's Day and hold a cultural performance, 36 sets of chorus costumes and 12 sets of dance costumes were made. If the average cloth used for each set is 1.8 meters, how many meters of cloth are needed in total?
为了庆祝元旦举行文艺汇演，做了36套合唱服和12套舞蹈服．如果平均每套用布料1.8米，一共需要布料多少米？
<gadget id="calculator">36 + 12</gadget>
<output>48</output>

<gadget id="calculator">48 * 1.8</gadget>
<output>86.4</output>

<result>86.4</result>