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.
वह बहूत सरल था जिसे एक हाई स्कूल का विद्यार्थी भी बिना किसी गणना के समझ लेता जो उन्होंने लिखा.