/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
import javax.script.ScriptEngineManager;
import javax.script.ScriptEngine;
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception{
 
    ScriptEngineManager mgr = new ScriptEngineManager();
    ScriptEngine engine = mgr.getEngineByName("JavaScript");
    String variables = String.format("var D1 = %d, D2 = %d, D3 = %d;",2,3,4);
    String formula = "D1 * ( D2/D3)";
    String script = variables + formula;
 
    System.out.println("DEBUG: "  +script );
 
    System.out.println(engine.eval(script));
	}
}

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