One kind of parts is processed, 1500 pieces are processed every day now, 300 more than in the past, what percentage is the number of parts processed every day now compared to the past?
加工一种零件，现在每天加工1500个，比过去每天多加工300个，现在每天加工的零件个数比过去增加百分之几？
<gadget id="calculator">1_500 - 300</gadget>
<output>1_200</output>

<gadget id="calculator">300 / 1_200</gadget>
<output>1/4 = around 0.25</output>

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