Croissant or Muffin

In a bakery each customer buys exactly one item, independently: a croissant with probability 70% or a muffin with probability 30%. Only 2 muffins are left and 5 customers are still waiting in line. What is the probability that the two muffins are sufficient, that is, no customer wants a muffin and finds none left? Give the exact value as a decimal.