In the "Environmental protection, start from me" environmental guardian activity, Xiaoqiang collected 180 used batteries, the number of used batteries collected by Xiaoming was Xiaoqiang's (5/6), and the number of used batteries collected by Xiaogang was Xiaoming's (4/6) 5), how many used batteries did Xiaogang collect?
"保护环境，从我做起"环保小卫士活动中，小强收集废旧电池180节，小明收集的废旧电池数是小强的(5/6)，小刚收集的废旧电池数是小明的(4/5)，小刚收集废旧电池多少节？
<gadget id="calculator">5 / 6</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">180 * (5/6) * (4/5)</gadget>
<output>120</output>

<result>120</result>