McDonald's India is looking at setting up a food processing plant in West Bengal as it plans to grow its business in eastern India.The first McDonald's outlet in eastern India will open in Kolkata tomorrow.The company has earmarked Rs 400 crore investment over the next three years of which 70% would be for expansion of the brand's presence and introduction of new formats, while 30% would be for the back-end operations.McDonald's has also set up a regional distribution centre in Kolkata, which would cater to the restaurants in and around Kolkata."In eastern India, we are investing Rs 100 crore and would be setting up close to 20 restaurants in the next three years," Vikram Bakshi, managing director, Connaught Plaza Restaurants, one of the two joint venture partners McDonald's has in India, said.