One of the personal finance podcasts I began listening to at the start of my financial transformation is one you might know.

It's the perennial question retirees ask: How much can I spend each year without running out of money?

Biohacker says this simple math formula can tell you your ‘ideal bedtime’ so you don’t wake up groggy By . Carly Stern. Published Feb. 18, 2025, 9:49 a.m. ET.

One simple math formula forms the fundamental basis for the human economy. Just remember that in many ways, compound interest is one of the main reasons we're here.

Fannie Mae has an excellent landlord guide that lists the lifespan of various components for easy reference. Here's the formula, using the example of a mid-priced electric range at Home Depot ...