can someone please tell my why my answer is incorrect and what the correct answer is? I don’t understand how this is wrong

Answer:
you were correct from my point of view but you could add a few zero's
Explanation:
i don't see how the was wrong
33000 Grams/Milliliters (g/mL) = 33,000,000 Milligrams/Milliliter (mg/mL)
1 g/mL = 1,000 mg/mL
1 mg/mL = 0.001000 g/mL