The planned investment is 50,000 yuan less than the actual, and the planned investment is 150,000 yuan. How much is the planned investment less than the actual.
计划投资比实际少5万元，计划投资15万元，计划投资比实际少多少．
<gadget id="calculator">15 + 5</gadget>
<output>20</output>

<gadget id="calculator">5 / 20</gadget>
<output>1/4 = around 0.25</output>

<result>1/4 = around 0.25</result>