Morgan is considering the purchase of a low$-$end computer system. After some careful investigating, she finds that there are seven basic systems $($each consisting of a monitor, CPU, key$-$ board, and mouse$)$ that meet her requirements. Furthermore, she also plans to buy one of four modems, one of three CD ROM drives, and one of six printers. $($Here each peripheral device of agiven type, such as the modem, is compatible with al seven basic systems.$)$ nI how many ways can Morgan configure her low end computer system?