Hi @kd_bansil,
For this you proceed with step by step
1) Get the current pricing of the product and multiple the pricing with 3.65.
2) In magento there is an option in admin panel to choose which currency should be shown in the site.
Store currency:
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$objectManager = \Magento\Framework\App\ObjectManager::getInstance();
$currency = $objectManager->get('Magento\Framework\Pricing\PriceCurrencyInterface');
$currency_symbol = $currency->getCurrency()->getCurrencySymbol();
3) Show price to right side:
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<div style="float: right"><?php echo $currency_symbol.$price ?>
If my answer is useful, give kudos & accept as solution
Best regards
Madhuresan
Bootsgrid