Complete the code so it will read strings from a file and convert them to numbers. Replace 'FillThisIn' with missing code.

# Expected output:

# String $\text{'}4\text{'}$ converted to number: $4\mathrm{.}00$

# String $\text{'}4\mathrm{.}5\text{'}$ converted to number: $4\mathrm{.}50$

# String 'ten' cannot be converted to number

# String $\text{'}4,000\text{'}$ cannot be converted to number

FillThisIn:

file$8=$ open$(\text{'}$DataFile$8.$txt$\text{'},\text{'}$r$\text{'})$

FillThisIn:

print$("$Error: File not found"$)$

exit$()$

for line in file$8$:

line $=$ line.rstrip$(\text{'}$

$\text{'})$

print$($f$"$String $\text{'}\{$line$\}\text{'}",$ end$="")$

FillThisIn:

num $=$ float$($line$)$

print$($f$"$converted to number: $\{$num:$\mathrm{.}2$f$\}")$

FillThisIn:

print$("$cannot be converted to number"$)$

file$8.$close$()$