city charges a monthly gas fee according to the following regulations. The part of the gas used by each household within 60 cubic meters is charged at 0.8 yuan per cubic meter; the part exceeding 60 cubic meters is charged at 1.2 yuan per cubic meter. Last month, Wang Fang’s family paid a total gas bill of 60 yuan. How many cubic meters of gas did her family use last month?
某城市按以下规定收取每月煤气费，每户用煤气在60立方米以内的部分按每立方米0.8元收费；超出60立方米的部分按每立方米1.2元收费．王芳家上月共交煤气费60元，她家上月用煤气多少立方米？
<gadget id="calculator">60 * 0.8</gadget>
<output>48</output>

<gadget id="calculator">60 - 48</gadget>
<output>12</output>

<gadget id="calculator">12 / 1.2</gadget>
<output>10</output>

<gadget id="calculator">10 + 60</gadget>
<output>70</output>

<result>70</result>