19 乘法 2 等于多少？

19 × 1 = 19 19 × 3 = 57 19 × 4 = 76 19 × 5 = 95 19 × 6 = 114 19 × 7 = 133 19 × 8 = 152 19 × 9 = 171 20 × 2 = 40 18 × 2 = 36 21 × 2 = 42 17 × 2 = 34 22 × 2 = 44 16 × 2 = 32 23 × 2 = 46 15 × 2 = 30 1 × 38 = 38 2 × 19 = 38 38 × 1 = 38 98 × 1 = 98 46 × 14 = 644 94 × 74 = 6956 70 × 65 = 4550 80 × 40 = 3200 78 × 22 = 1716 17 + 21 = 38 52 - 14 = 38 83 - 45 = 38 92 - 54 = 38 98 × 79 = 7742