Results area, expressions can be entered here

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- use buttons like a calculator, or math expressions can be entered directly into the result area by clicking/tapping it and using a keyboard (the area has multiple lines for long expressions), then when ready press blue
`equals =`

button - hint: you can also enter your measurements or calculations into the temporary notes area and then copy and paste them into the result area. This is useful to keep track of, or reuse, your calculations
- calculator uses mathjs library and can parse and evaluate expressions using many units and constants, eg. feet, inch, m, cm, mm, kg, lb, degF, degC, mean, std, pi, phi, sum, sqrt, ^, %, !, e, trigonometric, bin, hex, etc. For more information: mathjs.org units
- order of operations:
- parentheses
- exponents
- multiplication and division
- addition and subtraction
- same precedence (like * and /) are computed from left to right

- usage examples include:
- to calculate a sum use
`+`

or`add`

or`sum`

, eg.`sum(first,second,third,...)`

with no final comma and a closing parenthesis; - find the longer 'golden ratio' length, enter:
`length/phi`

; - determine the hypotenuse of a right triangle enter
`sqrt(first^2+second^2)`

add closing parenthesis; - conversions use
`to`

or`in`

, eg. convert feet/inches to mm enter`#inch to mm`

or`#feet +#inch to mm`

, or`#kg in lb`

- lengths with different units can be added, eg.
`#inch + #mm`

- trigonometry, eg. cosine:
`cos(45 deg)`

- speed, eg.
`90 km/h to m/s`

etc.

- to calculate a sum use
- decimal calculations done in javascript sometimes produce results with many decimal places - these inaccuracies can be ignored, or results rounded manually

- use buttons like a calculator, or math expressions can be entered directly into the result area by clicking/tapping it and using a keyboard (the area has multiple lines for long expressions), then when ready press blue