Calculează:
a) 345: (344 + 344 + 344) + 230: (229 +229);
b) (238 : 210 + 623 : 61): [210.310+ (224)2];
c) 57: (53)2 + {16.423: (83) + 206 : 106. [19-9.(57)}: (53)}]}: 112;
d) 366 : {245 : 215:34 +91: (32)16. [102:5-(326.28 - 419) - 5]}
