Cullumber Inc. is a retailer operating in Calgary. Alberta. Cullumber uses the perpetual inventory system. Assume that there are no credit transactions; all amounts are settled in cash. You are provided with the following information for Cullumber for the month of January 2025. Calculate weighted-average unit cost. (Round answers to 3 decimal places, e.g. 5.125.) Jan. 1 Jan. 2 Jan.6$ Jan.9 \$ Jan. 10$ Jan. 23$ Jan. 30$