The students made flowers, completed the plan (3/5) in the first half of the month, and completed the plan (3/4) in the second half of the month. What percentage of the actual full month was exceeded?
同学们做花，上半月完成计划的(3/5)，下半月完成计划的(3/4)，实际全月超额做了几分之几？
<gadget id="calculator">3 / 5</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>