public function getExchangeRate()
    {
        try {
            $currentCurrency = $this->storeManager->getStore()->getCurrentCurrency()->getCode();
            $baseCurrency = $this->storeManager->getStore()->getBaseCurrency()->getCode();
            return (float)$this->currencyFactory->create()->load($baseCurrency)->getAnyRate($currentCurrency);
        } catch (\Exception $e) {
            throw $e;
        }
    }