#include <stdio.h>
struct trade {double price; int number;};
double trade_price (struct trade *t) {return t -> price * t -> number;}
main ( ) {
  double price;
  int number;
  struct trade *tptr;
  tptr = (struct trade*) malloc (sizeof (struct trade));
  while (2 == scanf ("%lf%i", &price, &number)) {
    tptr -> price = price;
    tptr -> number = number;
    printf ("The total value of the trade is %f.\n",
            trade_price (tptr));
  }
  printf ("You seem to have finished.\n");
}