#include<stdio.h>
int main(){
    int a,b,c;
    scanf("%d",&a,&b,&c);
    printf("10/5 = 2"\n);
    printf("20/5 = 4"\n);
    printf("30/5 = 6"\n);
    printf("40/5 = 8"\n);
    printf("50/5 = 10"\n);
    printf("Division operation completed.");
    printf("Element at index 2:30");
    printf("Element access operation completed.");
    printf("Average of the array elements: 30.0");
    printf("Average calculation operation completed.");
    return 0;
}