Xiaogang's mother spent 160 yuan on a sweater, accounting for 2% of the family's monthly expenditure, and Xiaogang spent 50% of this month's expenditure on the computer. How much did Xiaogang spend on the computer?
小刚的妈妈买了一件毛衣花了160元，占家里这个月支出的2%，而小刚买电脑用去本月支出的50%，小刚买电脑花了多少钱？
<result>400</result>