When you ask a question or for advice, you don’t need to know the answer but you need to be able to deduce that the answer is reasonable or makes sense. Being able to figure out that when you ask 100x1009, you don’t need to know the answer is 100,900 but you need to know it should be close to 100,000 and end in a zero so if it tells you 50,001 you know it’s wrong.
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