Finding coefficients and adding text

I want to find the coefficients in the loop and add the text. This coefficient may change. For example: 10, 5, 3 ... I would like the system to find these coefficients and add text according to the coefficient I set

$coefficient=10; 
$start=100; 
$end=200;
for($i=$start;$i<$end;$i++){ 
    echo $i.'<br>';
}

example; 110 .. text, 120...text, 130...text or $coefficient=5; 105...text, 110...text, 115...text I want to find coefficients and add text