Assuming all vitamin A in Huel is retinol (which is the level of declared vitamin A when retinyl palmitate is used), the 160mcg per 100g can be converted to IU by dividing by 0.3. This gives a total of 533.3333 IU per meal, or 2666.666667 IU per day.
If I am incorrect and retinyl palmitate is being declared instead of retinol, you are correct.