What is the maximum number of people you can feed? Since you're not really feeding them something, there's no cap. If all seven billion people on the planet turn up at your door and demand their share of pizza, you should say "No problem!" because "their share of pizza" is meaningless. You might...
The slide rule is often used for multiplication and division, but it can also be used for functions like exponents, roots, logarithms, and trigonometry. It is rarely used for addition or subtraction.
The introduction of the inexpensive, fast, and versatile electronic pocket calculator led to...