JSFiddle - React, Tailwind, and code Playground

HTML

<div class="value">173.206</div>

JavaScript

var randomVal1 = function(min,max){
    return Math.random() * (max - min) + min;
};

var value1 = parseInt($(".value").text()),
	rand = randomVal1(value1 + 0.001,value1 + 0.006).toFixed(3);

alert(rand);