Over the past month in South Speck, a market with 13,000 households, 600 households purchased Cheshire brand toothpaste, while 2,800 households purchased at least one product in this category. In the given month, the dollar purchases of Cheshire brand toothpaste ran $54,800. Among the households that purchased Cheshire, total purchases of toothpaste came to $197,000. The Usage Index for the brand is 0.90. What is the Market Share ($) for Chesire in South Speck