$num + 3.2 = $math.add($num, "3.2")
$num - 3.2 = $math.sub($num, "3.2")
$num / 3.2 = $math.div($num, "3.2")
$num * 3.2 = $math.mul($num, "3.2")
$num ^ 3.2 = $math.pow($num, "3.2")

Min of $num and 3.2 = $math.min($num, "3.2")
Maxi of $num and 3.2 = $math.max($num, "3.2")

4.45678 rounded to 3 dp = $math.roundTo(3, "4.45678")
4.45678 rounded to the nearest integer = $math.round("4.45678")

$math.random is a random number
$math.random(1, 20) is a random number between 1 and 20