The toy factory requires the production of a batch of small toys. The original plan is to produce 300 pieces per day, which can be completed in 15 days. The actual daily output is 1.5 times the original plan. How many days did it take to complete this batch of tasks?
玩具厂要求生产一批小玩具，原计划每天生产300个，15天可以完成，实际每天的产量是原计划的1.5倍．完成这批任务用了多少天？
<gadget id="calculator">300 * 1.5</gadget>
<output>450</output>

<gadget id="calculator">15 / 450</gadget>
<output>1/30 = around 0.033333</output>

<gadget id="calculator">300 * (1/30)</gadget>
<output>10</output>

<result>10</result>