He wrote down a simple thing -- so simple, in fact, that I suspect a really smart high-school student who didn't even have calculus could understand what he wrote down.
در واقع انقدر ساده بود که فکر کنم یک دانش آموز دبیرستانی باهوش که محاسبات نخوانده هم بتواند اون چیزی که نوشته بود رو بفهمه.