Paddle payment tax calculator when tax is included with the price

paddle_payment_tax_calculator

<?php
	
	function calculateAmount($subtotal, $discount){
	  $finalSubtotal = round(($subtotal /1.15), 2);
	  
	  echo "Subtotal: {$finalSubtotal}\n";
	  $finalDiscount = round(($discount / 1.15), 2);
	  
	  echo "Discount: {$finalDiscount}\n";
	  
	  $payableAmount = $finalSubtotal - $finalDiscount;
	  
	  echo "Price: {$payableAmount}\n";
	  
	  $tax = round(($payableAmount *0.15), 2);
	  
	  echo "Tax: ${tax}\n";
	  
	  $totalPayable = $payableAmount + $tax;
	  
	  echo "Total Payable: {$totalPayable}\n";
	  
	  
	  
	  
	}
	
	calculateAmount(5, 0);
	echo "------------------------------\n";
  calculateAmount(25.80, 12.90)
?>