var Prefixes = {'n':0,
                'u':3,
                'm':6,
                'c':7,
                'd':8,
                '':9,
                'da':10,
                'h':11,
                'k':12,
                'M':15,
                'G':18};
var LogPrefOff = {0:'n', 1:'n', 2:'n', 3:'u', 4:'u', 5:'u', 6:'m', 7:'c', 8:'d', 9:'',
                    10:'da', 11:'h', 12:'k', 13:'k', 14:'k', 15:'M', 16:'M', 17:'M', 18:'G'};
function convert(quantity, StartPrefix, EndPrefix){
    return quantity*10**(Prefixes[StartPrefix]-Prefixes[EndPrefix]);
}
function simplify(quantity, StartPrefix){
    EndPrefix=LogPrefOff[Prefixes[StartPrefix]+Math.floor(Math.log10(Math.abs(quantity)))];
    return convert(quantity, StartPrefix, EndPrefix).toString() + EndPrefix;
}