#include<bits/stdc++.h> 
using namespace std;
int main() {
	int a,n,a1=1,s;
	cin>>n;
	while(n--){
		cin>>s;
		while(s){
		a=s%10;
		s/=10;
		a1*=a;
		}
		cout<<a1<<endl;
		a=0;
		a1=1;
	}
	return 0;
}