#include <iostream>
using namespace std;

int main() {
   int currentPrice;
   int lastMonthsPrice;

   cin >> currentPrice;
   cin >> lastMonthsPrice;

   /* Type your code here. */

   cout << "This house is $" << currentPrice << ". The change is $" << currentPrice-lastMonthsPrice << " since last month." << endl
   << "The estimated monthly mortgage is $" << (currentPrice*0.051)/12 << "." << endl;

   return 0;
}