import std.algorithm;
import std.array;
import std.conv;
import std.math;
import std.range;
import std.stdio;
import std.string;
import std.typecons;

T read(T)() { return readln.chomp.to!T; }
T[] reads(T)() { return readln.split.to!(T[]); }
alias readint = read!int;
alias readints = reads!int;

int calc(int a, int b, int t) {
    int x = t / a;
    return x * b;
}

void main() {
    auto xs = readints;
    int a = xs[0];
    int b = xs[1];
    int t = xs[2];
    writeln(calc(a, b, t));
}
