The actual investment in a project is 3.6 million yuan, which is 20% less than the planned investment. How much is the planned investment?
某项目实际投资360万元，比计划少投资20%，计划投资多少万元？
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 - (1/5)</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">360 / (4/5)</gadget>
<output>450</output>

<result>450</result>