A new coffee shop is now welcoming customers in Maine! The owner, William Lopez, has always loved coffee, and his desire to create a special place for people to enjoy it has finally become a reality.

William$$s long$-$term goal is to build a strong community of coffee enthusiasts who will become regular customers. To achieve this, he plans to showcase coffee beans from the renowned brand Espresso Excellence.

Considering that monthly sales of Espresso Excellence coffee beans can be modeled as a Normal Distribution with a mean of $421$ bags and a standard deviation of $105$ bags:

What$$s the probability of selling less than $400$ bags of Espresso Excellence?