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import java.math.BigDecimal;

public class DecimalExample {
    public static void main(String[] args) {
        BigDecimal decimal1 = new BigDecimal("10.5");
        BigDecimal decimal2 = new BigDecimal("20.5");

        BigDecimal sum = decimal1.add(decimal2);
        BigDecimal difference = decimal1.subtract(decimal2);
        BigDecimal product = decimal1.multiply(decimal2);
        BigDecimal quotient = decimal1.divide(decimal2, BigDecimal.ROUND_HALF_UP);

        System.out.println("Sum: " + sum);
        System.out.println("Difference: " + difference);
        System.out.println("Product: " + product);
        System.out.println("Quotient: " + quotient);
    }
}

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