como multiplicar os bigdecimals

// Java program to demonstrate the
// multiply() method
  
import java.math.*;
  
public class gfg {
  
    public static void main(String[] args)
    {
  
        // Assign two BigDecimal objects
        BigDecimal b1 = new BigDecimal("54.2");
        BigDecimal b2 = new BigDecimal("14.20");
  
        // Multiply b1 with b2 and assign result to b3
        BigDecimal b3 = b1.multiply(b2);
  
        // Print b3 value
        System.out.println("Multiplication is " + b3);
    }
}
Blue-eyed Boar