Zhang Ming and Li Qiang share a water meter. In May, the two families share 80 tons of water. It is known that each ton of water is 2.5 yuan. Zhang Ming’s family has more water. After negotiation, the two families will share the monthly water fee by 3:2 ． How much does Zhang Ming's family have to pay for water in May?
张明与李强两家人共用一个水表，五月份他们两家人共用水80吨，已知每吨水2.5元，张明家用水多一些，协商后，该月水费他们两家按3：2分担．五月份张明家要交水费多少元？
<gadget id="calculator">3 + 2</gadget>
<output>5</output>

<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">2.5 * 80 * (3/5)</gadget>
<output>120</output>

<result>120</result>