Marketable Securities (Details) - Schedule of investment income (loss) - USD ($)	3 Months Ended		9 Months Ended
	Apr. 30, 2024	Apr. 30, 2023	Apr. 30, 2024	Apr. 30, 2023
Marketable securities:
Dividend and interest income	$ 7,617	$ 5,846	$ 74,053	$ 89,653
Net realized gain on sale of marketable securities			149,260
Net unrealized gain (loss) on marketable securities	(11,633)	4,769	(119,284)	(176,672)
Total	$ (4,016)	$ 10,615	$ 104,029	$ (87,019)