#include<stdio.h>

int main()

{

    int t;

    double a,s;

    scanf("%d",&t);

    while(t--)

    {

        s=;

        for(int i=;i<;i++)

        {

            scanf("%lf",&a);

            s+=a;

        }

        //1.注意案例的输出格式

        //2.rounded to the nearest penny

        int ss=s/12.0+0.005;

        printf("$%d",ss);

        int yi,er,shu;

        shu=(s/12.0+0.005)*;

        yi=shu%/;er=shu%;

        if(yi!=||er!=)

        {

            printf(".");

            if(yi!=&&er==)

                printf("%d",yi);

            else

                printf("%d%d",yi,er);

        }

        puts("");

    }

    return ;

}