In order to encourage residents to save water, the water supply company stipulates that each person uses no more than 2 cubic meters of water per month, and charges 1.2 yuan per cubic meter, and charges more than 2 cubic meters at 4 yuan per cubic meter. The three members of Wang Hong’s family paid a total of 23.2 yuan for water last month. Please calculate how many cubic meters of water Wang Hong’s family used last month?
供水公司为鼓励居民节约用水，规定每人每月用水不超过2立方米，按每立方米1.2元收费，超过2立方米的部分按每立方米4元收费．王红家三口人，上月共交水费23.2元，请你算一算王红家上月用水多少立方米？
<gadget id="calculator">2 * 3</gadget>
<output>6</output>

<gadget id="calculator">2 * 3 * 1.2</gadget>
<output>7.2</output>

<gadget id="calculator">23.2 - 7.2</gadget>
<output>16</output>

<gadget id="calculator">16 / 4</gadget>
<output>4</output>

<gadget id="calculator">6 + 4</gadget>
<output>10</output>

<result>10</result>