I need a Google Sheet structured for daily, manual entry of both sales and purchase transactions. Every record must capture four fields exactly—Date, Product Name, Quantity and Price—and the layout has to make that input quick, clear and error-resistant. Please set up: • an input tab that is already formatted with data-validation where useful (dates, numeric quantity and price) • an automatic running total for each day plus a clean summary view that shows cumulative figures at a glance • formulas placed so they keep working even as rows are added indefinitely No external system connections are required; everything will be typed in by hand. The sheet should be ready to copy, share and start using the same day it is delivered.