Yes, it would be very good for that.
for keeping track of marks and stuff
you can use it by saying " I keep track of my dailey schedule everyday."
To keep track of what stock they have in the shop.
my advice to you is study and use notecards
to keep track of selling items and bought items
Doctors can use a spreadsheet to track their patients. With a spreadsheet, they can track the patient's last visit and what medications they are taking.
Keep track of prices and what people buy Accounting
A salesman would use a spreadsheet as it is easy to arrange the data because there are column and rows. Spreadsheet is the best software for offices. It is very easy to use, retrieve and store there.
im not sure but maybe to keep track of everything in their shop?? if im wrong please improve the question Xx You can use a spreadsheet to mimic a database but most retailers these days use EPOS for inventory tracking. A spreadsheet is excellent at cash up procedures, accounting for vouchers/coupons and balancing the cash.
for keeping track of money
Scientists use spreadsheets to track scientific progress in chemicals and to track the amount of chemicals e.g. in scientific calculations or in experiments. also to keep track on how useful the chemical is.
Sales people would use a spreadsheet to keep track of the items they sell, the profit they made on each item and the price of the items.