EK Chemical Company sells a specialty chemical in packages marked 83 g. In reality, EK has set the process mean at 84.0 g, and the process currently has a standard deviation of 1.85 g. Suppose the customer will accept anywhere from 78 to 88 g, as long as the average package has at least 83 g a. The process capability index for the current manufacturing process is___________(Enter your response rounded to three decimal places.)