The number of prints depends on various factors such as font size, font type, print resolution, parameters, etc. For reference if you are printing production and expiration date of 2 lines;

• Dotted font, 3mm height =  approximately 10 416 666 characters.
• High resolution font, 3 mm height = approximately 5, 144, 032 characters

There is a built-in tool available on Hx Nitro to help users determine the estimated number of prints of a cartridge Check the link for more details: Ink Consumption Calculator.