The study of negotiating (marketing and management), quantifying (economics) and pricing (finance) and recording (accounting) economic transactions between 2 or more economic entities.
The 1st part (negotiation) mainly examines the soft-skill requirements of economic transactions (buying/selling, etc.) This stage occurs both before or after quantity and price has been decided. It is when the 2 or more parties examines each other's interests ("sizing" each other up), comparing them with their own; and decide how to proceed with the other party. Hence, maths is not the forefront of the discipline - it mainly focuses on studying the psychology of transacting parties and the sociological aspect of economic transactions. If you like the behavioural aspect of business; marketing and management is for you.
The 2nd (quantifying) and 3rd part (pricing) are interchangeable. Since one cannot quantify something without assigning a relative value to it (econ 10o1). This is where mathematics plays a larger role; since value is a subjective concept to different people. So economics will quantify and rank these subjective values of the different parties into a measurable scale. Finance will then simply convert these values into a nominal measurement that both parties can understand (ie. dollars, work hours, interest rates, etc.) If you enjoy mathematics and possess a logical mindset; econ/finance will suit you.
The 4th and final stage (recording) speaks for itself. Whilst there are a lot of data and numbers involved; it is not about maths. That has already been done earlier in the "Quantifying" and "pricing" stages. Accounting is more about ensuring that the units of measure and the price/quantity agreed upon in the transaction is recorded correctly, fairly, consistently and objectively. The key criterias to being a successful accountant is not just the ability to be very precise and fastidious in your work; you also have to possess an analytical mind. A good accountant must be able to put themselves in the shoes of all the parties in the transaction; and ensure all RELEVANT information is recorded.
It is my very simplistic view of what i consider is the overall scope of the commerce discipline.