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#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
int main() {
int time, t; //time:输入测试数据次数 t:数字的每一位
ios::sync_with_stdio(false);//读入输出优化的强迫症= =
cin >> time;
//按次数输入数据
for (int i = 0; i < time; i++) {
ll x;
cin >> x; //输入的数据
ll p = 0; //9的几次方？
ll ans = 0; //有多少个？
//模拟9进制
while (x) {
//取个位
t = x % 10;
//如果比7大，那么实际是要小一个的
if (t >= 7) t--;
//计算有多少个？
ans += t * pow(9, p);
x = x / 10;
p++;
}
cout << ans << endl;
