import java.util.Arrays;
import java.util.Scanner;

/**
 * SequenceFunc
 */
public class SequenceFunc {
  private static final int MOD = 1000000007;

  public static void main(String[] args) {
    Scanner scan = new Scanner(System.in);
    System.out.println("Please enter the number of elements: ");
    int n = scan.nextInt();
    System.out.println("Please enter the elements of the Array");
    int[] arr = new int[n];
    for (int i = 0; i < n; i++) {
      arr[i] = scan.nextInt();
    }
    System.out.println("The array has the following elements: ");
    for (int x : arr) {
      System.out.print(x + "\t");

    }
    // to store the last result

    // let's create a temporary array

    long result = 0;
    int[] temp = new int[n];

    for (int i = 1; i <= n; ++i) {
      System.arraycopy(arr, 0, temp, 0, i);
      Arrays.sort(temp, 0, i);
      long fi = 0;
      for (int j = 0; j < i; j++) {
        fi = (fi + (long) (j + 1) * temp[j]) % MOD;
      }
      result = (result + fi) % MOD;
    }
    System.out.println(result);
    scan.close();
  }
}