$[$HTML and JavaScript$]7\mathrm{.}13$ A large company pays its salespeople on a commission basis. The salespeople receive $$200$ per week, plus $9$ percent of their gross sales for that week. For example, a salesperson who sells $$5000$ worth of merchandise in a week receives $$200$ plus $9$ percent of $$5000,$ or a total of $$650.$ You have been supplied with a list of the items sold by each salesperson. The values of these items are as follows:

Item Value

$1239\mathrm{.}99$

$2129\mathrm{.}75$

$399\mathrm{.}95$

$4350\mathrm{.}89$

Develop a script that inputs one salesperson$$s items sold for last week, calculates the salesperson$$s earnings and outputs HTML$5$ text that displays the salesperson$$s earnings. Make it so you can input different quantities of any of the items to calculate different commission rates.