$[$Nvidia$]$ Nvidia has seen a recent stock surge and wants to hire more salespeople. They conducted a market emironment analysis and found that they have $50\mathrm{.}000$ customers, a call frequency of $10$ per year, an average call length of $90$ minutes, and $1\mathrm{.}000$ hours of average selling time per year. According to the workload method, what is the number of salespeople Nvidia needs?

$750$

$45$

$750\mathrm{.}000$

$450$

There is not enough information to calculate an answer