After being stunned for almost a minute, Fernando asked in a hurry, "Douglas, what mathematical problem are you working on?"
He had never been embarrassed when it came to asking other people what he did not know, and he was most earnest when it came to the things he was interested in. Magic knowledge and mathematical problems were certainly among them.
Having set up alarm magic circles around, Douglas had known about it when Fernando entered the place, but instead of greeting the visitor, he continued dwelling in the ocean of mathematics. It was not until Fernando opened his mouth that he finally raised his head and answered, "The calculation of the area and volume of irregular objects, as well as the corresponding problems."
The quill in his hands did not stop when he answered the question. So, his words were quite literal.
