How can the following code be tweaked for "Have a nice day" to be printed as the last output statement when the user enters $75$ and $0$ at the first two prompts?

def main$()$:

try:

total $=$ int$($input$("$Enter total cost of items? $"))$

num$\_$items $=$ int$($input$("$Number of items $"))$

average $=$ total $\frac{?}{?}$ num$\_$items

except ZeroDivisionError:

print$(\text{'}$ERROR: cannot have $0$ items'$)$

except ValueError:

print$(\text{'}$ERROR: number of items cannot be negative'$)$

main$()$