Grammar

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Simple arithmetics

2 + 2     // 4
3 * 3 - 2 // 7

Parentheses

change natural operator precedence

15 + 5 * 2   // 25 
(15 + 5) * 2 // 40

Mix text and math expressions

Sometimes it is very handy to add some clarifying text inside expressions

Number 5 is just a number        // 5
Sum of 5 and + 5                 // 10

Number escape (or number comment)

It is possible to exclude number from evaluation by using symbol \

\12                // the result will be empty
7 + \2 33          // 40
22 * 2 \3 and -1   // 43

Sign

-10     // -10
-5 + 5  // 0
-1 + 5  // 4

Shortcuts

See Prefixes

1k   // Shortcut for thousand 1000
1M   // Shortcut for million  1 000 000 

Power

- 2 ^ 5    // 32
- 10 ^  3  // 1000 
2 ^ 3 ^ 2  // 512

- 10 ^ -3  // 0.001

Percentages

1000 + 10%         // 1100
2 + 10%            // 2.2
10% * 1000         // 100
1000 - 10% - 10%   // 810
10% * 10%          // 0.01

20 is 10% of      // 200
450 is 15% of     // 3000

10% of 1010       // 101
10% of (300 * 2)  // 60

20 of 1000 to %   //2%
450 of 3000 to %  //15%
15 of 24 to %     //62.5%

Units

- Length 
    meter (m), inch (in), foot (ft), yard (yd), mile (mi), link (li), rod (rd), chain (ch), angstrom, mil
- Surface area  
    m2, sqin, sqft, sqyd, sqmi, sqrd, sqch, sqmil, acre, hectare
- Volume 
    m3, litre (l, L, lt, liter), cc, cuin, cuft, cuyd, teaspoon, tablespoon
- Liquid volume 
    minim (min), fluiddram (fldr), fluidounce (floz), gill (gi), cup (cp), pint (pt), quart (qt), gallon (gal), beerbarrel (bbl), oilbarrel (obl), hogshead, drop (gtt)
- Angles 
    rad (radian), deg (degree), grad (gradian), cycle, arcsec (arcsecond), arcmin (arcminute)
- Time second 
    (s, secs, seconds), minute (mins, minutes), hour (h, hr, hrs, hours), day (days), week (weeks), month (months), year (years), decade (decades), century (centuries), millennium (millennia)
- Frequency 
    hertz (Hz)
- Mass 
    gram(g), tonne, ton, grain (gr), dram (dr), ounce (oz), poundmass (lbm, lb, lbs), hundredweight (cwt), stick, stone
- Temperature   
    kelvin (K), celsius (degC), fahrenheit (degF), rankine (degR)
- Amount of substance
    mole (mol)
- Luminous intensity
    candela (cd)
- Force 
    newton (N), dyne (dyn), poundforce (lbf), kip
- Energy 
    joule (J), erg, Wh, BTU, electronvolt (eV)
- Power 
    watt (W), hp
- Pressure 
    Pa, psi, atm, torr, bar, mmHg, mmH2O, cmH2O
- Electricity and magnetism 
    ampere (A), coulomb (C), watt (W), volt (V), ohm, farad (F), weber (Wb), tesla (T), henry (H), siemens (S), electronvolt (eV)
- Binary
    bits (b), bytes (B)

Prefixes

Decimal prefixes

Name    Abbreviation    Value

- deca  da  1e1
- hecto h   1e2
- kilo  k   1e3
- mega  M   1e6
- giga  G   1e9
- tera  T   1e12
- peta  P   1e15
- exa   E   1e18
- zetta Z   1e21
- yotta Y   1e24

- deci  d   1e-1
- centi c   1e-2
- milli m   1e-3
- micro u   1e-6
- nano  n   1e-9
- pico  p   1e-12
- femto f   1e-15
- atto  a   1e-18
- zepto z   1e-21
- yocto y   1e-24

- kibi  Ki  1024
- mebi  Mi  1024^2
- gibi  Gi  1024^3
- tebi  Ti  1024^4
- pebi  Pi  1024^5
- exi   Ei  1024^6
- zebi  Zi  1024^7
- yobi  Yi  1024^8

- kilo  k   1e3
- mega  M   1e6
- giga  G   1e9
- tera  T   1e12
- peta  P   1e15
- exa   E   1e18
- zetta Z   1e21
- yotta Y   1e24

Simple arithmetics#

Parentheses#

Mix text and math expressions#

Number escape (or number comment)#

Sign#

Shortcuts#

Power#

Percentages#

Units#

Prefixes#