Interactive very simple calculator as a primary undertaking. As of now it handles arithmetic, linear and quadratic calculations If you want to declare that the 1st working day that the water filter can be used is March 1st, then you can say: Do you see this used in the write-up https://chandigarhenglishnewspaper.blogspot.com/2025/08/from-delhi-to-world-news-in-english.html