The goal of the project is to write a class SimpleCalculator that performs calculations: addition, subtraction, multiplication, and division. Addition and multiplication shall accept multiple arguments. Division shall return a float value, and division by zero shall return the string "inf". Multiplication by zero must raise a ValueError exception. The class will also provide a function to compute the average of an iterable like a list. This function gets two optional upper and lower thresholds and should remove from the computation the values that fall outside these boundaries. Project requirements