(41811:1267+506×(3000-2877)):153
(41811:1267+506×(3000-2877)):153=407
1)3000-2877=123
2)41811/1267= 33
3)506*123= 62238
4)33+62238= 62271
5)62271/153= 407
(41811/1267+506*(3000-2877))/153 = 407