The algorithm shown below should calculate and display the total amount due, but it is not working correctly. What needs to be corrected $($hint: there are two$)?$

Input Processing Output

number purchased

folder price

sales tax rate

Processing items: subtotal, sales tax total due

Algorithm:

$1.$ Enter the number purchased and folder price

$2.$ calculate the subtotal by multiplying the number purchased by the folder price

$3.$ Calculate the sales tax by dividing the subtotal by the sales tax rate

$4.$ Calculate the total due by adding the sales tax to the subtotal

$5.$ display the total due