Use a box of plasticine to make a four-wheeled car model. If you make a body, you can make 20; if you make a wheel, you can make 120. How many car models like this can be made in this box of plasticine?
用一盒橡皮泥做四轮汽车模型，如果做车身，可以做20个；如果做车轮，可以做120个．这盒橡皮泥可以做这样的整车模型多少个？
<gadget id="calculator">1 / 20</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">4 / 120</gadget>
<output>1/30 = around 0.033333</output>

<gadget id="calculator">(1/20) + (1/30)</gadget>
<output>1/12 = around 0.083333</output>

<gadget id="calculator">1 / (1/12)</gadget>
<output>12</output>

<result>12</result>