$(document).ready(function() {
    $('.number').each(function(index, elem) {
        let val = $(elem).text();
        $({
            countNum: 0
        }).animate({
            countNum: val
        }, {
            duration: 3000,
            easing: 'linear',
            step: function() {
                $(elem).text(Math.floor(this.countNum));
            },
            complete: function() {
                $(elem).text(this.countNum);
            }
        });
    });
});