<?php

  $days = 200 * 12;
  $investment = 1;
  $percent = 0.55  ;


  for( $i=0;$i< $days; $i++ ){
    // echo ' On day '.($i+1).' investment is: '. $investment.' and end of the day: '. ($investment + ( $percent * ($investment/100) ));
    $investment = ($investment + ( $percent * ($investment/100)));
    // echo '<br>';

  }
echo ' On day '.($i+1).' investment is: '. $investment.' and end of the day: '. round($investment + ( $percent * ($investment/100) ));


?>