val small = 10.metre
    
    val large = 10.kilo.metre

    val added = 10.metre + 1.kilo.metre
    >> 1010.0 m
    
    val speed = added/10.minute 
    >> 101 m/min
    
    var aFewSeconds = 5.second
    aFewSeconds++
    >> 6.0 s
    
    10.peta.watt > 2.watt
    >> true
    
    5.gram <= 20.kilo.gram
    >> true
    
    (-10.nano.metre).abs()
    >> 10.0 nm
    
    ## The operator '==' does not always work reliably for quantities;
    ## the function qeq() should be used instead.
    1.kilo.gram == 1000.gram
    >> false
    
    1.kilo.gram qeq 1000.gram
    >> true

    5.gram + 2.pound
    >> 912.18474 g
    
    (13.kilo.gram + 20.pound) convertTo STONE
    >> 3.47572100600243466674378 st