In the donation activity for the earthquake-stricken areas in Wenchuan, the students of Lei Feng's group in Class 4 and 1 of Changjiang Primary School donated their pocket money one after another. The group donated a total of 998 yuan. Among them, 4 female students donated an average of 120 yuan each. How much did the male students donate in total?
在为汶川地震灾区捐款活动中，长江小学四1班雷锋小组的同学纷纷捐出自己的零花钱．这个小组共捐款998元，其中女同学4人，平均每人捐了120元，男同学一共捐了多少元？
<gadget id="calculator">120 * 4</gadget>
<output>480</output>

<gadget id="calculator">998 - 480</gadget>
<output>518</output>

<result>518</result>