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The stockholders' equity section of Velcro World is presented here, VELCRO WORLD Balance Sheet (partial) ($ and shares in thousands Stockholders' equity: Preferred stock, $1 par value Common stock, $1 par value Additional paid-in capital Total paid-in capital Retained earnings Treasury stock, 10,000 common shares Total stockholders' equity $ 5.300 23,000 728, 600 756,900 281,000 (250,000) $ 787,900 Based on the stockholders' equity section of Velcro World, answer the following questions. Remember that all amounts are presented in thousands. Problem 10-4A Part 1 Required: 1. How many shares of preferred stock have been issued? (Enter you answer in total number of shares, not in thousands.) Number of shares