The school held a scientific and technological works competition, and 60 works won the third prize, and the first prize was less than the third prize (2/3). How many pieces won the first prize?
学校举行科技作品大赛，获三等奖的作品有60件，获一等奖的比三等奖少(2/3)．获一等奖的有多少件？
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">1 - (2/3)</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">60 * (1/3)</gadget>
<output>20</output>

<result>20</result>