Zahlen von Internetseite suchen und in txt-Datei speichern

$export = 'D:\preise.csv'  
$currencies = 'bitcoin','ethereum'  
if ($PSVersionTable.PSVersion.Major -lt 3){write-host "ERROR: Minimum Powershell Version 3.0 is required!" -F Yellow; return}  
$content= irm -uri 'https://coinmarketcap.com' -Method Get  
$rate = [double]([regex]::match($content,'(?is)data-eur="([^"]+)"').Groups[1].Value)  
$currencies | %{
    $value = ([double]([regex]::match($content,"(?is)<tr id=`"id\-$_`".*?class=`"price`".*?data-usd=`"([^`"]+)`"").Groups[1].Value) / $rate)  
    [pscustomobject]@{'Name'=$_;'Preis(€)'=$value}  
} | export-csv $export -Delimiter ";" -NoType -Encoding UTF8