The actual investment in a sewage treatment project in a city in the south is 1.2 million yuan, which is 1/6 less than the original plan. How much was the original planned investment?
南方某城市的污水处理工程，实际投资120万元，比原计划节约了(1/6)，原计划投资多少万元？
<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">1 - (1/6)</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">120 / (5/6)</gadget>
<output>144</output>

<result>144</result>