def calculate$\_$properties$($metal$\_$name, metal$\_$prices, metal$\_$densities, metal

# Find the index of the desired metal in the input lists

metal$\_$index $=$ metal$\_$prices. index$($metal$\_$name$)$

# Extract relevant values for the selected metal

metal$\_$price $=$ int $($metal$\_$prices metal$\_$index $+1$ : An error is occuring that states that it could not convert string to float $\text{'}\mathrm{.}04$Silver$0\mathrm{.}63$Copper$\mathrm{.}66\text{'}$ can you fix it