// BEGIN CUT HERE

 /*

  * Author:  plum rain

  * score :

  */

 /*

  */

 // END CUT HERE

 #line 11 "ApproximateDivision.cpp"

 #include <sstream>

 #include <stdexcept>

 #include <functional>

 #include <iomanip>

 #include <numeric>

 #include <fstream>

 #include <cctype>

 #include <iostream>

 #include <cstdio>

 #include <vector>

 #include <cstring>

 #include <cmath>

 #include <algorithm>

 #include <cstdlib>

 #include <set>

 #include <queue>

 #include <bitset>

 #include <list>

 #include <string>

 #include <utility>

 #include <map>

 #include <ctime>

 #include <stack>

 using namespace std;

 #define clr0(x) memset(x, 0, sizeof(x))

 #define clr1(x) memset(x, -1, sizeof(x))

 #define pb push_back

 #define sz(v) ((int)(v).size())

 #define all(t) t.begin(),t.end()

 #define zero(x) (((x)>0?(x):-(x))<eps)

 #define out(x) cout<<#x<<":"<<(x)<<endl

 #define tst(a) cout<<a<<" "

 #define tst1(a) cout<<#a<<endl

 #define CINBEQUICKER std::ios::sync_with_stdio(false)

 typedef vector<int> vi;

 typedef vector<string> vs;

 typedef vector<double> vd;

 typedef pair<int, int> pii;

 typedef long long int64;

 const double eps = 1e-;

 const double PI = atan(1.0)*;

 const int inf =  / ;

 class ApproximateDivision

 {

     public:

         double quotient(int a, int b, int terms){

             int t = ;

             while (t <= b){

                 if (t == b) return (double)a / b;

                 t *= ;

             }

             int c = t - b, cnt = ;

             double t1 = 1.0, t2 = t;

             double sum = ;

             while (cnt < terms){

                 sum += a * t1 / t2;

                 t1 *= c; t2 *= t;

                 ++ cnt;

             }

             return sum;

         }

 // BEGIN CUT HERE

     public:

     void run_test(int Case) { if ((Case == -) || (Case == )) test_case_0(); if ((Case == -) || (Case == )) test_case_1(); if ((Case == -) || (Case == )) test_case_2(); if ((Case == -) || (Case == )) test_case_3(); if ((Case == -) || (Case == )) test_case_4(); if ((Case == -) || (Case == )) test_case_5(); if ((Case == -) || (Case == )) test_case_6(); }

     private:

     template <typename T> string print_array(const vector<T> &V) { ostringstream os; os << "{ "; for (typename vector<T>::const_iterator iter = V.begin(); iter != V.end(); ++iter) os << '\"' << *iter << "\","; os << " }"; return os.str(); }

     void verify_case(int Case, const double &Expected, const double &Received) { cerr << "Test Case #" << Case << "..."; if (Expected == Received) cerr << "PASSED" << endl; else { cerr << "FAILED" << endl; cerr << "\tExpected: \"" << Expected << '\"' << endl; cerr << "\tReceived: \"" << Received << '\"' << endl; } }

     void test_case_0() { int Arg0 = ; int Arg1 = ; int Arg2 = ; double Arg3 = 0.34375; verify_case(, Arg3, quotient(Arg0, Arg1, Arg2)); }

     void test_case_1() { int Arg0 = ; int Arg1 = ; int Arg2 = ; double Arg3 = 0.875; verify_case(, Arg3, quotient(Arg0, Arg1, Arg2)); }

     void test_case_2() { int Arg0 = ; int Arg1 = ; int Arg2 = ; double Arg3 = 0.33333301544189453; verify_case(, Arg3, quotient(Arg0, Arg1, Arg2)); }

     void test_case_3() { int Arg0 = ; int Arg1 = ; int Arg2 = ; double Arg3 = 8.481740951538086E-5; verify_case(, Arg3, quotient(Arg0, Arg1, Arg2)); }

     void test_case_4() { int Arg0 = ; int Arg1 = ; int Arg2 = ; double Arg3 = 0.14285714285714285; verify_case(, Arg3, quotient(Arg0, Arg1, Arg2)); }

     void test_case_5() { int Arg0 = ; int Arg1 = ; int Arg2 = ; double Arg3 = 0.0; verify_case(, Arg3, quotient(Arg0, Arg1, Arg2)); }

     void test_case_6() { int Arg0 = ; int Arg1 = ; int Arg2 = ; double Arg3 = 0.78125; verify_case(, Arg3, quotient(Arg0, Arg1, Arg2)); }

 // END CUT HERE

 };

 // BEGIN CUT HERE

 int main()

 {

 //    freopen( "a.out" , "w" , stdout );

     ApproximateDivision ___test;

     ___test.run_test(-);

        return ;

 }

 // END CUT HERE