41.2*8.1+11*9.25+537*1.19
=4.12*（10-1）*9+（10+1）*9.25+5.37*（100+20-1）
=（41.2-4.12）*9+92.5+9.25+537+107.4-5.37
=37.08*(10-1)+101.75+644.4-5.37
=370.8-37.08+96.38+644.4
=334.72+96.38+644.4
=431.1+644.4
=1075.5