There are two cements on the construction site. The first pile is 120 bags more than the second pile (3/5). It is known that the first pile has 180 bags. How many bags are there in the second pile? (Use the equation to solve) how much.
工地上有两水泥，第一堆比第二堆的(3/5)多120袋，已知第一堆有180袋．第二堆有多少袋？(用方程解)多少．
<gadget id="calculator">180 - 120</gadget>
<output>60</output>

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

<gadget id="calculator">60 / (3/5)</gadget>
<output>100</output>

<result>100</result>