#include <cstdio> #include <iostream> #include <algorithm> using namespace std; int a[20]; int main() { int k; cin >> k; while (k--) { string s; cin >> s; int ptr = 1, sign = 1; a[1] = a[2] = a[3] = a[4] = 0; for (int i = 0; i < s.size(); i++) { if ('0' <= s[i] && s[i] <= '9') a[ptr] = a[ptr] * 10 + (s[i] - '0') * sign; else { if (i != 0 && '0' <= s[i - 1] && s[i - 1] <= '9') ptr++; if (s[i] == '+' || s[i] == '=') sign = 1; if (s[i] == '-') sign = -1; } } double ans = a[4] - a[2]; double t = a[1] - a[3]; ans /= t; printf("%.5lf\n", ans + 1e-6); } return 0; }