Something Purple's Detour

Last night, hubby and I slept at 1am, we gave up with the last homework problem I have. I submitted it incomplete, we really can't comprehend it anymore. There were problems that entail making a restaurant payroll software. I wonder why we are tasked to do this as this type software is readily available online. Say, with Decision Logic, one can easily hire their services to provide businesses in the hospitality industry (from fast food restaurants to sit-down establishments) with enterprise management solutions that make operations streamlined and cost-effective. Or I guess, a little knowledge on how these are being done would help us as we further our management careers.