Marketable Securities (Details) - Schedule of investment income - USD ($)	3 Months Ended	6 Months Ended
Jan. 31, 2025	Jan. 31, 2024	Jan. 31, 2025	Jan. 31, 2024
Marketable securities:
Dividend and interest income	$ 3,464	$ 57,191	$ 8,427	$ 66,436
Net realized gain on sale of marketable securities		149,260		149,260
Net unrealized gain (loss) on marketable securities		55,916		(107,651)
Total	$ 3,464	$ 262,367	$ 8,427	$ 108,045

Amount before accretion (amortization) of purchase discount (premium) of interest income on nonoperating securities.

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