Powershell script to get Price per sq foot and 10% downpayment

ok I admit, I was bored and needed to do some programming.

function Calc-CJPSF($var_price,$var_size)
{
$var_psf = $var_price / $var_size
[math]::Round($var_psf,2)
}

function Calc-CJDownPaymentMal($var_price)
{
[math]::Round($var_price * 0.1,2)
}