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* Toys R Us Inc.’s profit from operations dropped 25% in the fiscal second quarter to $12 million, or 5 cents a share, a penny higher than estimates, because of costs to develop its fledgling Internet business. Sales rose 9.1% to $2.2 billion. Toys R Us also broke off its arrangement with venture capital firm Benchmark Capital, which had agreed in April to invest in Toys R Us’ online business. The company said it isn’t looking for a replacement.