import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class AppleSales {

	public static void main(String[] args) throws IOException {
		
		double avg;
		float sum = 0;
		float sales[] = new float[7];
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		
		for(int i = 1; i <= 7; i++) {
			System.out.println ("Enter sales for day" + i + " of week =");
			sales[i-1] = Float.parseFloat(br.readLine());
			sum = sum + sales[i-1];
		}
		
		System.out.println ("Sum = " + sum);
		avg = sum / 7;
		System.out.println ("Average sale of week=" + avg);
	}
}