managerial accounting, please show all steps!

Hawkeye, Inc. produces various types of PPE (personal protective equipment) using all natural fibers and fiber blends, and their products, such as masks and shields are sold both online and through various distributors such as medical supply houses. Their costs associated with taking orders is a mixed cost and management has asked for a breakdown of the fixed and variable components of the order taking costs. The pertinent data for the last 3 quarters are: Month Orders Taken Order Cost January 50,000 $788,000 February 55,000 $841,000 March 52,000 $812,000 April 67,000 $1,032,000 May 73,000 $1,086,000 June 61,000 $924,000 July 59,000 $889,000 August 48,000 $750,000 September 65,000 $972,000 Using the high-low method, what would be the total order cost estimation equation