To build a teaching building, the actual investment is 1.425 million yuan, which is 5% less than the planned investment. How much is the planned investment?
建造一幢教学大楼，实际投资142.5万元，比计划投资节省5%，计划投资多少万元？
<gadget id="calculator">5 / 100</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">1 - (1/20)</gadget>
<output>19/20 = around 0.95</output>

<gadget id="calculator">142.5 / (19/20)</gadget>
<output>150</output>

<result>150</result>