How much work did Euler do?

It's a fascinating question, how much work did Euler actually accomplish in his lifetime? Given his numerous contributions to the fields of mathematics, physics, astronomy, and even music, one could argue that he was a relentless workaholic. From his groundbreaking discoveries in number theory to his influential work on the calculus of variations, Euler's contributions are nothing short of monumental. But how much of this work was actually produced during his lifetime? And what drove him to such relentless pursuit of knowledge? Was it a passion for discovery, a desire for recognition, or simply a love for the intellectual challenge? Whatever the case may be, one thing is clear: Euler's legacy is one of the most enduring and influential in the history of science and mathematics.