#include<stdio.h>
void main()
{
	int z,i,m,n,s;
	scanf("%d%d%d",&m,&n,&s);
	i=s/n;
	z=m*i;
	printf("%d\n",z);
 }  
/**************************************************************
	Problem: 1323
	User: admin
	Language: C
	Result: Accepted
	Time:9 ms
	Memory:1144 kb
****************************************************************/