Answer:
She Can use Mainframe computers because these computers are very powerful in complex calculations.
Step-by-step explanation:
Because of these design strengths, the mainframe is often used by IT organizations to host the most important, mission-critical applications. These applications typically include customer order processing, financial transactions, production and inventory control, payroll, as well as many other types of work like complex calculations of different types of data.
Example:
Currently IBM system z is the primary mainframe. Depending upon the definition, IBM isystem computers are sometimes considered mainframes. Burroughs, Fujitsu, Hitachi, and Compaq (DEC) make or made computers considered mainframes. The most prevalent current example is the IBM Z mainframe.