emanual + + expansion

var belance = document.getElementById('pct_balance').value;
document.getElementById('pct_chance').value = 49.5;
document.getElementById('pct_payout').value = 2;
var ebe = (belance/100);
var oldbal = parseFloat(document.getElementById('pct_balance').value);
var f = true;
var b = ebe;
var target = 50000;
var olderest = document.getElementById('pct_balance').value
var old = parseFloat(document.getElementById('pct_balance').value);
var older = parseFloat(document.getElementById('pct_balance').value);
var oldt = parseFloat(document.getElementById('pct_balance').value);
var nextbet;
var k   = true;
var free = false;
var beets = 0;
var greats = 0;
var him = 3;
var wild = document.getElementById('pct_balance').value;
var min =document.getElementById('pct_balance').value;
parseFloat(document.getElementById('pct_bet').value = ebe);
parseFloat(document.getElementById('pct_profit').value = ebe);
Math.fmod = function (a,b) { return Number((a - (Math.floor(a / b) * b)).toPrecision(8)); }

function dobet(){
console.clear()
var balance = document.getElementById('pct_balance').value;
var previousbet = document.getElementById('pct_bet').value;
document.getElementById('pct_chance').value = 49.5;
document.getElementById('pct_payout').value = 2;
if (balance>older) {
beets = beets-1;
greats = greats+1;
older = parseFloat(balance);
}
if (balance<older) {
beets = beets+1;
greats = greats-1;
older = parseFloat(balance);
}
if (beets<0) {
beets = 0;
}
if (greats<0) {
greats = 0;
}
    if (greats>=7) {
    nextbet = previousbet*2;
    b = nextbet;
    free = true
    greats = 0;
}
if (beets>=him) {
    nextbet = previousbet*2;
    b = nextbet;
    him = 3;
    k = false;
    beets = 0;
}
if ((greats>=3)&&(free==true)) {
    nextbet = ebe;
    b = ebe;
    him = 4;
    free = false;
    k = true;
    beets = 0;
    greats = 0;
    old = parseFloat(balance);
}
if ((balance>=old)&&(k==false)) {
    nextbet = ebe;
    b = ebe;
    him = 4;
    free = false;
    k = true;
    beets = 0;
    greats = 0;
    old = parseFloat(balance);
}
if (nextbet<ebe) {
nextbet = ebe;
b = ebe;
}
if (nextbet==null) {
nextbet = previousbet;
}
if (balance>=target) {
//stop();
return;
}
if (balance>wild) {
wild = parseFloat(balance);
}
if (balance<min) {
min = parseFloat(balance);
}
var freak = ((balance-olderest).toFixed(8));
console.log("balance made");
console.log(freak);
console.log("biggest balance");
console.log(parseFloat(wild));
console.log("lowest balance");
console.log(parseFloat(min));
parseFloat(document.getElementById('pct_bet').value = (((nextbet*2)-nextbet).toFixed(8)));
parseFloat(document.getElementById('pct_profit').value = (((nextbet*2)-nextbet).toFixed(8)))
$('#a_lo').click();
}
setInterval(() => dobet(), 1200);