B2W Companhia Digital SA , Brazil's biggest online retailer, agreed to pay 127 million reais ($57 million) for a division of transportation company Tegma Gestao Logistica SA as the retailer bolsters its distribution channels. The 8M unit of B2W, e-commerce subsidiary of Lojas Americanas SA, struck a deal to acquire Tegma's Direct Express Logistica. The deal comes two weeks after B2W shareholders approved the sale of 2.38 billion reais in new stock, up to half of which will be subscribed by investment firm Tiger Global Management LLC, giving the Brazilian retailer firepower to defend its share of the booming e-commerce market. (Reuters)