120 students went to the beach to play, and the monitor bought mineral water for the students, 1 bottle per person, 2 yuan per bottle, and the mineral water held activities, buy 4 get 1 free, do the math, how much does the monitor need to pay in total?
120名同学去海边游玩，班长给同学们买矿泉水，每人1瓶，每瓶2元，且矿泉水搞活动，买四送一，算一算，班长一共需要付多少钱？
<gadget id="calculator">120 / 5</gadget>
<output>24</output>

<gadget id="calculator">24 * 4</gadget>
<output>96</output>

<gadget id="calculator">96 * 2</gadget>
<output>192</output>

<result>192</result>