First take out 144 pears from a basket, and then take out 60% of the total number. At this time, the remaining pears are exactly (1/4) of the original pears in this basket. How many pears are there in this basket?
一筐梨先拿出144个，又拿出总个数的60%，这时剩下的梨正好是原来这筐梨的(1/4)，这筐梨共有多少个．
<gadget id="calculator">60 / 100</gadget>
<output>3/5 = around 0.6</output>

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

<gadget id="calculator">(3/5) + (1/4)</gadget>
<output>17/20 = around 0.85</output>

<gadget id="calculator">1 - (17/20)</gadget>
<output>3/20 = around 0.15</output>

<gadget id="calculator">144 / (3/20)</gadget>
<output>960</output>

<result>960</result>