During 2020, Roberto sold 900 shares of Casual Investor Mutual fund for $8.85 per share. The shares were purchased on the following dates: Date May 31, 2016 Shares 430 Price $ 9.800 September 18, 2017 270 $ 8.100 October 21, 2017 480 January 12, 2019 310 10.100 $ 7.600 Required: Calculate the gain (loss) on the sale under the following assumptions: a. Basis is calculated using the first-in, first-out method. (Round your intermediate computations and final answer to 2 decimal places.) b. Basis is calculated using the average cost method (assume all shares are long-term). (Round "Average cost" to 3 decimal places. Round other intermediate computations and final answer to 2 decimal places.) a. Loss $ (456.00) b. Loss $ (252.90)