The car factory planned to produce 12 million cars last year, but actually produced 15 million cars. What percentage was the overproduction? What is the column
汽车厂去年计划生产汽车1200万辆，实际生产1500万辆，超产百分之几？列式为多少
<gadget id="calculator">1_500 - 1_200</gadget>
<output>300</output>

<gadget id="calculator">300 / 1_200</gadget>
<output>1/4 = around 0.25</output>

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