To build a new teaching building, the original plan was to invest 300,000 yuan, but the actual savings were (1/12). How much did you actually save compared to the original plan?
新建一栋教学楼，原计划投资30万元，实际节约了(1/12)．求实际比原计划节约了多少万元？
<gadget id="calculator">1 / 12</gadget>
<output>1/12 = around 0.083333</output>

<gadget id="calculator">30 * (1/12)</gadget>
<output>5/2 = around 2.5</output>

<result>5/2 = around 2.5</result>