hash-wallet/lib/entities/calculate_fiat_amount_raw.dart

String calculateFiatAmountRaw({required double cryptoAmount, double? price}) {
  if (price == null) {
    return '0.00';
  }

  final result = price * cryptoAmount;

  if (result == 0.0) {
    return '0.00';
  }

  return result > 0.01 ? result.toStringAsFixed(2) : '< 0.01';
}