You are given a math word problem and you are supposed to apply a single mathematical operators like addition, subtraction, multiplication or division on the numbers embedded in the text to answer the following question and then only report final the numerical answer.

Molly owns the Wafting Pie Company . This morning , her employees used 816 eggs to bake pumpkin pies . If her employees used a total of 1339 eggs today , how many eggs did they use in the afternoon ?
523