How long would a 414 mL bottle of contact lens solution last for two people?

I am going on a trip for about 25 days. My plan is to bring one new 414 mL (14 fl oz) bottle of contact lens solution. However, my friend wears contacts too; and we are planning to share the contact lens solution, if possible. We usually don't fill our containers all the way up to the fill line--just enough to cover each contact lens. Would one bottle last for us both?|||idk but you can always buy more on your trip