Two piles of sand, A and B, have a total of 120 tons. Due to project needs, 25% of the sand is removed from pile A, and 20 tons are transported into pile B. Now the two piles are the same, how many tons are there in pile B?
甲乙两堆沙子共120吨，由于工程需要，从甲堆运走25%，运来20吨倒入乙堆，现在两堆同样多，原来乙堆有多少吨．
<gadget id="calculator">120 + 20</gadget>
<output>140</output>

<gadget id="calculator">25 / 100</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 - (1/4)</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">1 + (3/4)</gadget>
<output>7/4 = around 1.75</output>

<gadget id="calculator">140 / (7/4)</gadget>
<output>80</output>

<gadget id="calculator">120 - 80</gadget>
<output>40</output>

<result>40</result>