For number data, PHP mainly uses Integer (whole numbers) and Float (decimal numbers). You'll treat things like price, quantity, discount, score, and age as numbers.
php
<?php
$price = 15000;
$discount = 0.10;
$finalPrice = $price - ($price * $discount);
echo "Final price: " . $finalPrice . " MMK";
echo "<br>";
var_dump(is_numeric($finalPrice));
?>You should see
Final price: 13500 MMK bool(true)