Complex sentence: Quondum, that was a really obscure way to answer a fairly straightforward question: the first two questions can be solved by integral calculus, by considering the positions of the points as they are added one at a time.
Split into simpler sentences: Quondum, that was a really obscure way to answer a fairly straightforward question. The first two questions can be solved by integral calculus, by considering the positions of the points as they are added one at a time.