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Shanghai Wholesale Corporation has prepared the following sales forecast for the first four months of the year: January February March April Sales in units 140,000 150,000 160,000 130,000 Shanghai purchases its products from a supplier and maintains an ending inventory equal to 10% of the next month's sales How many units will Shanghai plan on purchasing in March if there are 14,000 units in their January 1 inventory? Enter your answer as a whole number. Do not use dollar signs, commas, etc