A cement factory planned to produce 1,200 tons of cement, but actually produced 2,000 tons. What percentage was the overproduction?
某水泥厂计划生产水泥1200吨，实际生产了2000吨，超产了百分之几？
<gadget id="calculator">2_000 - 1_200</gadget>
<output>800</output>

<gadget id="calculator">800 / 2_000</gadget>
<output>2/5 = around 0.4</output>

<result>2/5 = around 0.4</result>