The students made 420 red flowers, and the number of red flowers is 60 more than three times that of yellow flowers. How many yellow flowers are there?
同学们做了420朵红花，红花的朵数比黄花的3倍还多60朵，黄花有几朵？
<gadget id="calculator">420 - 60</gadget>
<output>360</output>

<gadget id="calculator">360 / 3</gadget>
<output>120</output>

<result>120</result>