[int]$x=(get-content -Path .\file.txt -TotalCount 135)[-1]
[int]$y=(get-content -Path .\file.txt -TotalCount 227)[-1]
[int]$z=(get-content -Path .\file.txt -TotalCount 578)[-1]
[int]$n=(get-content -Path .\file.txt -TotalCount 892)[-1]
$f=".\file.txt"


"$x + $y = $($x+$y)"
"$x * $z = $($x*$z)"
"$z - $x = $($xz-$x)"
"($x + $y) * ($z - $x) + ($y + $z) = $(($x + $y) * ($z - $x) + ($y + $z))"
$f.Length - $f.IndexOf($($f.Length))