This calculator simulates the iPhone calc

#Use

To test out the calculator, cd into the project directory (ProblemTwo) and type: npm run devBuild

This will start Parcel's dev server, which will serve the page at localhost:1234

#Percentages

In this calculator, if there are two numbers (A and B) and only one (A) has a percent sign, that one will be converted to a percentage of the other number. Then the calculation will be performed with the new calculated percentage and the non-percent number. A% + B = (A / 100 x B) + B

If both numbers have % signs, they will be calculated as regular numbers and the result will have a % sign.

#Using the result of a calculation for the next calculation

If a calculation has just been performed, the result can be used as the first number in the next calculation. Its sign or percent status may be changed by pressing +/- or % buttons.

If a number is pressed instead before an operation is pressed, that number will clear the old result and will become the first number for the next calculation.