A factory completed 60% of the plan in the first half of the month, and completed (3/4) of the plan in the second half of the month. How much will the production increase this month?
某厂上半月完成计划的60%，下半月完成计划的(3/4)，这个月增产多少
<gadget id="calculator">60 / 100</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">(3/4) - 1</gadget>
<output>-1/4 = around -0.25</output>

<gadget id="calculator">(3/5) + (-1/4)</gadget>
<output>7/20 = around 0.35</output>

<result>7/20 = around 0.35</result>