Help with adding math to my read in file program

Hi, my code displays the txt data fine but where the second read in part i need to do some adding and division with each number. It gives me an error when I try it, how could i fix this?
gravity.txt
|
0.37 0.89 1.00 0.37 2.48 1.05 0.89 1.11 0.07
* Write a description of class WeightOnPlanetsV1 here.
* @author (your name)
* @version (a version number or a date)
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.Scanner;
import java.io.PrintWriter;
import java.io.File;
import java.io.IOException;
public class WeightOnPlanetsV1
  public static void main(String[] args) throws IOException
    int planetWidth = 10;
    int gravityWidth = 16;
    int weightWidth = 14;
    String formatString = "%" + planetWidth + "s%" + gravityWidth + "s%"
        + weightWidth + "s%n";
    System.out.printf("%40s\n\n", "My Wight on the Planets");
    System.out.printf(formatString, "Planet", "Gravity", "Weight");
    System.out.printf("---------------------------------------------------%n");
    String[] planets =
      "Mercury", "Venus", "Earth", "Mars", "Jupiter", "Saturn", "Uranus",
      "Neptune", "Pluto"
        String token = "";
          File fileName = new File("gravity.txt");
          Scanner inFile = new Scanner(fileName);
          List space = new ArrayList();
          while (inFile.hasNext())
               token = inFile.next();
               space.add(token);
          inFile.close();
        String  token1 = 0;           // or double
          File fileName1 = new File("gravity.txt");
          Scanner inFile1 = new Scanner(fileName1);
          List space1 = new ArrayList();
          while (inFile1.hasNext())
              token1 = inFile1.next();
               space1.add(token1);
          inFile1.close();
    for (int i = 0; i < planets.length; i++)
System.out.printf(formatString, planets, space.get(i), space1.get(i));

opps okay it works but i just don't know how to do the math part?
* Write a description of class WeightOnPlanetsV1 here.
* @author (your name)
* @version (a version number or a date)
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.Scanner;
import java.io.PrintWriter;
import java.io.File;
import java.io.IOException;
public class WeightOnPlanetsV1
  public static void main(String[] args) throws IOException
    int planetWidth = 10;
    int gravityWidth = 16;
    int weightWidth = 14;
    String formatString = "%" + planetWidth + "s%" + gravityWidth + "s%"
        + weightWidth + "s%n";
    System.out.printf("%40s\n\n", "My Wight on the Planets");
    System.out.printf(formatString, "Planet", "Gravity", "Weight");
    System.out.printf("---------------------------------------------------%n");
    String[] planets =
      "Mercury", "Venus", "Earth", "Mars", "Jupiter", "Saturn", "Uranus",
      "Neptune", "Pluto"
        String token = "";
          File fileName = new File("gravity.txt");
          Scanner inFile = new Scanner(fileName);
          List space = new ArrayList();
          while (inFile.hasNext())
               token = inFile.next();
               space.add(token);
          inFile.close();
        String token1;
          File fileName1 = new File("gravity.txt");
          Scanner inFile1 = new Scanner(fileName1);
          List space1 = new ArrayList();
          while (inFile1.hasNext())
              token1 = inFile1.next();
               space1.add(token1);
          inFile1.close();
    for (int i = 0; i < planets.length; i++)
System.out.printf(formatString, planets, space.get(i), space1.get(i));

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