Calculate the total cost (in $), proceeds (in $), total gain (or loss) (in $), and return on investment for the mutual fund investment. The offer price is the purchase price of the shares, and the net asset value is the price at which the shares were later sold. (Round your return on investment to one decimal place.)

Shares Offer Price Total Cost Net Asset Value Proceeds Per Share Dividends Total Gain (or loss) Return on Investment %

500 $10.80 ? $12.70 ? $0.64 ? ?