factory originally planned to produce 600,000 tons of cement, but actually produced 660,000 tons. By what percentage was the actual production more than planned?
某厂原计划生产水泥60万吨，实际生产66万吨．实际比计划多生产百分之几？
<gadget id="calculator">66 - 60</gadget>
<output>6</output>

<gadget id="calculator">6 / 60</gadget>
<output>1/10 = around 0.1</output>

<result>1/10 = around 0.1</result>