Xiao Ming puts 127 Go pieces into several bags. No matter how many chess pieces the child wants (no more than 127), Xiao Ming only needs to take out a few bags to meet the requirements, so Xiao Ming must prepare at least how many bags.
小明将127粒围棋子放入若干个袋子里，无论小朋友想要几粒棋子(不超过127粒)，小明只要取出几个袋子就可以满足要求，则小明至少要准备多少个袋子．
<result>7</result>