I know a couple ways to get to 1 quadrillion if you’re cps is over 1 billion.
1. Get many grandma types. To do this you have to have at least 15 of any building, then in the store an upgrade that looked like a grandma will pop up; buy as many of them as you can, this will boost your cps by a ton.
2. Try to get the upgrade “quadrillion fingers”. It costs 50 billion and you need 200 cursors (probably 200 cursors cost around 250 trillion). It’s a good upgrade if you like spamming on the big cookie.
3. If you have kitten helpers, (you should or else you’re a noob) try to get achievements. This will impact milk, which impacts cps. I have a couple below.
Give yourself a name by clicking on the name of your bakery. Change it.
Click on the unknown achievement directly to the right of the achievement above. Trust me on this.
Go to the top of the stats. You’ll see tiny cookies. Click on one.
Go to the news articles and click on it 50 times.
Press control minus a bunch of times (you need at least 3 achievements). To undo, use control equals.
Get 50 of every building, then upgrade further to get 100.
4. Or, just do the easy way, leave it running all night!