（78.6-0.786*25+0.75*21.4)除15*2001咋写？简便

(78.6-0.786*25+0.75*21.4)/15*1997 (78.6-0.786*25+0.75*21.4)/15*1999 （78.6-0.786*25+0.75*21.4）/15*2001 简算(78.6-0.786*25+0.75*21.4)/15*2003 （78.6-0.786*25+0.75*21.4)除15*2001咋写？简便 78.6-0.786*25+0.75*21.4请大家看好题在回答,我没有/15*2001 (78.6-0.786*25+75%*21.4)/15*1997 (78.6-0.786/25+75%/21.4)*15/2011 78.6—0.786*25+75%*21.4 (78.6-0.786*25+75%*21.4)/15*2011 (78.6-0.786×2.5＋0.75×21.4)÷15×1997=? (78.6－0.786×25＋75%×21.4)÷15×1997 (78.6-0.786*25+75%*21.4)/15*20的简算 (78.6-0.786*25+75%*21.4)*1997 如何计算? 78.6-0.786×25+75％×21.4）÷2001 简便运算（78.6—0.786×25+75%×21.4）÷15×2001 .（78.6—0.786×25+75%×21.4）÷15×2001= (78.6——0.786乘以25+75%乘以21.4）除以15乘2001快