In the "Sing Red Songs" competition to celebrate the 90th anniversary of the founding of the Communist Party of China, the teachers' chorus had 150 people, which was 1/4 more than the workers' chorus. How many people were there in the workers' chorus?
在庆祝中国共产党建党90周年的"唱红歌"比赛中，教师合唱队有150人，比工人合唱队的人数多(1/4)，工人合唱队有多少人？
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 + (1/4)</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">150 / (5/4)</gadget>
<output>120</output>

<result>120</result>