The school held a "Welcome the New Year" party, and the students bought balloons to decorate the venue. Among them, there are 20 red balloons, less (3/5) than balloons of other colors, how many balloons of other colors are there?
学校召开"迎新春"联欢会，同学们买来气球布置会场．其中红气球有20只，比其他颜色的气球少(3/5)，其他颜色的气球有多少只？
<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">1 - (3/5)</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">20 / (2/5)</gadget>
<output>50</output>

<result>50</result>