$a =(Read-Host).Split() $b =(Read-Host).Split() $c =(Read-Host).Split() $d =(Read-Host).Split() foreach($i in 0..2){ echo($i) $b[$i]-=$a[$i] $c[$i]-=$a[$i] $d[$i]-=$a[$i] } echo(($b[0]*$c[1]*$d[2]+$b[1]*$c[2]*$d[0]+$b[2]*$c[0]*$d[1])/6)