The store bought 180 new footballs, sold (1/3) on the first day, and sold the rest (1/3) on the second day, how many footballs are left now?
商店新进180个足球，第一天卖出(1/3)，第二天又卖出余下的(1/3)，现在还剩下多少个足球？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 - (1/3)</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">180 * (2/3) * (2/3)</gadget>
<output>80</output>

<result>80</result>