Please explain to me how to make Aug 1 and Dec 31

During 2018, Munchies Financial Corporation had the following held for trading investment transactions: Feb. 1 Mar. 1 Apr. July Aug. Sept. Oct. 1 1 Purchased 610 CBF common shares for $36,600. Purchased 750 RSD common shares for $24,000. Purchased 7% MRT bonds at face value, for $60,000. Interest is received semi-annually on April 1 and October 1. Received a cash dividend of $3 per share on the CBF common shares. Sold 210 CBF common shares at $59 per share. Received a cash dividend of $1.50 per share on the RSD common shares. Received the semi-annual interest on the MRT bonds. Sold the MRT bonds for $62,100. The market prices of the CBF and RSD common shares were $56 and $33 per share, respectively. 1 1 1 Dec. 31 Feb. 1 Held for Trading Investments 36600 Cash 366 Mar. 1