#include <stdio.h>
#include <stdlib.h>
#include <string.h>

int main() {
    char s[100];
    fgets(s, 100, stdin);
    *(strchr(s, '=')) = 0; 
    printf("%lld\n", atoll(s) * atoll(strchr(s, '*') + 1));
    return 0;
}
/**************************************************************
	Problem: 1129
	User: fuhoubin
	Language: C++
	Result: Accepted
	Time:6 ms
	Memory:1036 kb
****************************************************************/