Same like our fingers, brains of people are different from each other. Not everyone's brain work efficiently so, the world would be worse without a calculator. Calculator makes calculations much easier.
No, because the calculator is solared power so which means that the calculator will only work in a room that has light or it can also work outside during the day when the sun is out
calculator
A calculator makes it easy to accurately compute sums. Also, a calculator works fast, which is help when you have to calculate under time pressure.
The calculator I am sure you are referring to is the mortgage rate calculator. This inputs your income and monthly bills and makes sure you can afford a mortgage.
It has mathematical functions other than the basic arithmetical ones (+, -, * and /), and possibly sqrt and %.
4/9
Any calculator that prints on paper can be set to print everything as it goes into the calculation. There are calculator programs on computers that include a "tape" that shows work, as well. A number of more recent calculators also show work on the graphical display.
Roadpro makes a large button calculator just for this purpose.
Texas Instruments makes cheap ones with plenty of functions.
that maces no sens
It tells you the awnsers to maths questions.