How can the separation of formatting and calculation processes in PHP code improve the accuracy of currency display and calculations in a webshop?

Separating the formatting and calculation processes in PHP code can improve the accuracy of currency display and calculations in a webshop by ensuring that calculations are performed using the appropriate data types and precision, and then formatting the results for display separately. This helps avoid rounding errors or discrepancies that may occur when performing calculations and formatting simultaneously. 

// Calculation process
$price = 10.99;
$quantity = 3;
$total = $price * $quantity;

// Formatting process
$formatted_total = number_format($total, 2);

echo "Total: $" . $formatted_total;

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