a) 4: (2.2¹)+(3+3 105): 106; b) 33 + 3¹0 38.3 +3·37:35 +2-3¹0: (5.35 +35) + 9.3³; c) [3². 33 +254 252 + (35)4 : 32⁰] : 31; d) [348 : 318+ (24)5+623 : 6¹3] : [(3³) (2²) +317.31¹³ + (2³)*]; e) 10 - {24² : 576 +3 [(3²2)¹5 (329. 2¹5) +1²¹]}: 13; f) 2100 [250.248+ (210. 215)5: 227 + (576: 575-3) 90.28 +2⁹8]; g) [37.310 +2203: 2108- 5 (52)5]: (317 +295-5¹1).​