Please explain this code. I don't understand some of it$.$

# Ask for customer name

customer$\_$name $=$ input$("$State your name: $")$

print$($f$"$Hello $\{$customer$\_$name$\}")$

# Start order process

order $=$ input$("$Welcome to Goode to Go Mexican Restaurant. Would you like to place an order? $($Y for yes, N for no$)$: $").$upper$()$

# Menu and prices $($in a dictionary for easier access$)$

menu $=\{$

$1$: $("3$ Carne Asada tacos plate", $11\mathrm{.}99),$

$2$: $("3$ Chicken tacos plate", $8\mathrm{.}99),$

$3$: $("$Al Pastor tacos plate", $9\mathrm{.}99),$

$4$: $("$Carne Asada burrito", $15\mathrm{.}99),$

$5$: $("$Chicken burrito", $13\mathrm{.}99),$

$6$: $("$Al Pastor burrito", $14\mathrm{.}99),$

$7$: $("$Fountain drink", $3\mathrm{.}99),$

$8$: $("$Jarritos soda drink", $4\mathrm{.}50),$

$9$: $("$Horchata$",4\mathrm{.}50),$

$10$: $("$Extra condiments", $1\mathrm{.}00)$

$\}$

subtotal $=0\mathrm{.}0$ # Initialize subtotal

sales$\_$tax$\_$rate $=0\mathrm{.}08$ # Example sales tax rate $(8\%)$

# Display menu

def print$\_$menu$()$:

print$("$

Here are the menu options:"$)$

for key, value in menu.items$()$:

print$($f$"\{$key$\}.\{$value$[0]\}$ for $$\{$value$[1]$:$\mathrm{.}2$f$\}")$

# Ordering process

while order $=="$Y$"$:

print$\_$menu$()$

choice $=$ int$($input$("$Please enter the number of the item you'd like to order: $"))$

if choice in menu:

item$\_$name, item$\_$price $=$ menu$[$choice$]$

print$($f$"$You selected: $\{$item$\_$name$\}-$ $$\{$item$\_$price:$\mathrm{.}2$f$\}")$

subtotal $+=$ item$\_$price

else:

print$("$Invalid choice, please try again."$)$

# Ask if the customer wants to order more

order $=$ input$("$Would you like to order more? $($Y for yes, N for no$)$: $").$upper$()$

# Calculate tax and total

sales$\_$tax $=$ subtotal $*$ sales$\_$tax$\_$rate

total $=$ subtotal $+$ sales$\_$tax

# Display the total with tax applied

print$("$

Thanks for ordering! Here is your receipt:"$)$

print$($f$"$Subtotal: $$\{$subtotal:$\mathrm{.}2$f$\}")$

print$($f$"$Sales Tax $(8\%)$: $$\{$sales$\_$tax:$\mathrm{.}2$f$\}")$

print$($f$"$Grand Total: $$\{$total:$\mathrm{.}2$f$\}")$