There are 240 new Yadea electric cars in the electric car dealership, and 180 have been sold. How many points are left?
电动车行新进雅迪电动车240辆，已经卖出180辆，还差几分之几没有卖？
<gadget id="calculator">240 - 180</gadget>
<output>60</output>

<gadget id="calculator">60 / 240</gadget>
<output>1/4 = around 0.25</output>

<result>1/4 = around 0.25</result>