The 7th National Bank has two check-processing sites.

Site 1 can process 10,000 checks per day, and site 2 can process 6000 checks per day. The bank processes three types of checks: vendor, salary, and personal.

The processing cost per check depends on the site, as listed in the file P05_46.xlsx. Each day, 5000 checks of each type must be processed. Determine how to minimize the daily cost of processing checks.