This gave Newton more time to refine & finish his mathematical invention called "the Calculus" which, as we all know, is such an indespensible tool in engineering & mechanics, electronics & robotics, in research labs especially in deriving new medicines to cure mankind's ailments, in space exploration which is humanity's next frontier, & etc.

Overall, the Calculus is such an indespensible tool for today's world & well into the future. (But I didn't pass that course back in college & thus, became a nurse:)

*Actually, another [German] mathematician named Liebniz was simultaneously inventing the Calculus too but Newton didn't know about it & vice versa. Hence, both men are equally-credited with its invention.