Exression for number counter with math.round and adding spaces?

[UCKG5FD4]

I have this so far:

startT = 0;
endT = 1;
beginVal = 0;
endVal = 3766;
t = linear(time,startT,endT,beginVal,endVal);
t += "";
t.replace(/(\d)(?=(\d\d\d)+(?!\d))/g, "$1 ");

Im getthing this in between the two numbers:

How do I add math.round to this expression to just see nombers without any decimals?

[UCKG5FD4 · Accepted solution]

I found it a minute later on a video linked below

I just parented slider control to my source text.

num = effect("Slider Control")("Slider").value.toFixed();
function addCommas(x) {
return x.toString().replace(/\B(?=(\d{3})+(?!\d))/g, " ");
}
addCommas(num);

https://www.youtube.com/watch?v=EfoHlj0CKes&t=134s