The year before last, an electrical appliance group issued 5 million shares at 8 yuan per share. At that time, Li, a member of the board of directors, subscribed for 30% of the shares. A year later, the stock price rose to 10.8 yuan per share. Now if Li wants to obtain the controlling stake of this electrical appliance group, how much RMB will he have to invest at least? (To gain control of the group, at least 51% of the group's shares)
前年，某电器集团发行了500万股股票，每股8元．当时董事局成员李某认购了30%的股份．一年后，股价上涨到每股10.8元．现在李某要获得这个电器集团的控股权，他至少还要投人多少万元？(要获得集团控股权，至少获得该集团51%的股份)
<result>1_134</result>