use std::io::Read;

fn solve(abc: Vec<u32>) {
    let res: f64 = ((abc[2] * abc[0]) as f64) / (abc[1] as f64);
    println!("{}", res);
}

fn main() {
    let mut abc = String::new();
    std::io::stdin().read_to_string(&mut abc).ok();
    let abc: Vec<u32> = abc.trim().split('\n').next().unwrap().trim().split_whitespace()
        .map(|s| s.parse::<u32>().unwrap())
        .collect();
    solve(abc);
}