To build a teaching building, the actual investment is 3.25 million yuan, which is (1/6) less than the plan. How much is the planned investment?
建一座教学楼，实际投资325万元，比计划节约了(1/6)，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">325 / (5/6)</gadget>
<output>390</output>

<result>390</result>