Why is Mrs Bennet so pleased that Mr Bingley has arrived in the neighborhood in the book Pride and Prejudice?

Once Mr. Bennet and Mr. Bingley meet, the rest of the Bennet family will be able to meet him, also. Since Mrs. Bennet is so occupied in trying to marry her daughters to wealthy men, she hopes that one of them will then form a relationship with Mr. Bingley.