var lines = [];
var reader = require('readline').createInterface({
  input: process.stdin,
  output: process.stdout
});
reader.on('line', (line) => {
  lines.push(line);
});
reader.on('close', () => {
  const val = lines[0].split(" ");
  const answer = Math.floor(val[2] / val[0]) * val[1];
  console.log(answer);
});