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138+ (27:3-1) x 2:8+2x (100 - 195:15) × 2 7+7:7x (7-7:7)×7:7 (202:2+ 101 x 2):3-2x (2-2:2) 36+8x (100-47-53 + 2 x 18): (13-36:9) 1 000: (74+26) + 100 × (8 + 2) - (2 x 286 + 2 × 214) 425: (600-595) - (81:9 + 71 x 1) + (4 x 11-66:2 35+1 000: (15 x 25 - 25 x 25) + 3x (40 +8:2) 9.550:10+20 × (81:9 +9) - 20: (6 x 7-11 x 2)​