The output value of a factory was 160,000 yuan last year, and this year it was 40,000 yuan more than last year. How much is this year’s increase compared to last year?
某厂去年产值16万元，今年比去年多4万元，今年比去年增加多少
<gadget id="calculator">4 / 16</gadget>
<output>1/4 = around 0.25</output>

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