How do you load ink cartridge in the Canon P23-DHV?

To load an ink cartridge in the Canon P23-DHV calculator, first ensure the calculator is turned off. Open the cartridge compartment by sliding the cover or pressing the release latch, depending on the model. Insert the new ink cartridge into the compartment, ensuring it clicks securely into place, then close the cover. Finally, turn the calculator back on to check that the ink is functioning properly.