#include<stdio.h>

int main()

{int a,b,c,err;

char op;

do

{scanf("%d%c%d",&a,&op,&b);

err=0;

if(a==0&&b==0)break;

if(op=="+")c=a+b;

if(op=="-")c=a-b;

if(op=="*")c=a*b;

if(op=="/")

if(b)c=a/b;else err=1;

if(op=="%")

if(b)c=a%b;else err=1;

if(err)printf("%d%c%d error!\n",a,b,c);

else printf("%d%c%d=%d\n",a,op,b,c);

}while(1);

return 0;

}