37×34+63×57+37×23=37×34+37×23+63×57=37×(34+23)+63×57=57×(37+63)=57×100=5700
37x(34十23)十63x5737X57十63×5757x(37十63)57×1005700
原式=37*(34+23)+63*57=37*57+63*57=57*(37+63)=5700