Niu Niu and Niu Niu plan to discount 60 lucky stars. As a result, Niu Niu completed all the tasks (3/5), and Niuniu lost 45 of them. How much of the plan did the two actually complete?
牛牛和妞妞计划折60只幸运星．结果牛牛完成了全部任务的(3/5)，妞妞折了45只．两人实际完成了计划的几分之几？
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">(3/4) + (3/5)</gadget>
<output>27/20 = around 1.35</output>

<result>27/20 = around 1.35</result>