未来是谁的天下.pdf
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2016.12
115 × 20 = 2,300
115 × 20 = 2,300
2,300 × 6 = 13,800
115 × 20 = 2,300 2300 ÷ 365 = 6.3
2,300 × 6 = 13,800
115 × 20 = 2,300 2300 ÷ 365 = 6.3
2,300 × 6 = 13,800 20 ÷ (20 - 6.3) = 1.459
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