When a shopping mall celebrates the 5th anniversary of the store, it conducts a promotional activity of "minus 160 yuan when you spend 400 yuan", which is equivalent to how much discount you can get on products worth 400 yuan.
某商场在店庆5周年时，进行"满400元减160元"的促销活动，相当于满400元的商品可以打多少折．
<result>6</result>