Hongqi Primary School students participated in the fundraising activities. Senior students donated a total of 1,440 yuan, which was 1.2 times that of middle-grade students. How much more did senior students donate than middle-grade students?
红旗小学学生参加募捐活动，高年级学生共捐款1440元，是中年级学生捐款的1.2倍，高年级学生比中年级学生多捐款多少元？
<gadget id="calculator">1_440 / 1.2</gadget>
<output>1_200</output>

<gadget id="calculator">1_440 - 1_200</gadget>
<output>240</output>

<result>240</result>