Ohh sorry it was actually Reincarnator
http://www.mangago.zone/read-manga/reincarnator/
And it's more economy and finance compared to this lol. Even as an accounting major I can't keep up with their conversations hahha
Most of things in Reincarnator is International Business and Stocks Exchange. Not that I belittle your major but I think it's quite a different subject that's why you cannot follow. I take International Business as one of my subsidiary classes and I still cannot follow 90% of it too, so I totally feel you

i feel like this story is like a school project. hold on, listen-
like you know those stupid assignments like
"draw a comic that HAS to use the vocabulary!"
and you do something dumb like
"when summer starts, the DEMAND INCREASES, and therefore INCREASES SUPPLY."
but this story is just the a very very long version of that