User blog:MachineGunSuper/Help

Hey there. I know this might be a stupidly stupid question, but understand that I am new to googology, so I might ask stupid questions. My question is HOW do people calculate such large numbers? People always make huge numbers that are all the way up in the list of googolisms. I get how they do that, but HOW do they know in what class/level to put it, HOW do they know what number does it come after in the list and what number it is below in the list. I would really want this question to be answered. One guess is that they use a calculator, but I don't think calculators can comprehend such large numbers. Other guesses is that they simply calculated it by themselves, but I don't think you would have time to calculate such large numbers. For example, say you had a million followed by a quadrillion up arrows. How do you know how big such a number is? I've seen numbers this big, but I always wondered how can they know how big it is?