ʽſǶ        [ + - * / ^ ],^Ǵη
  cos(D)  = Dֵ,DԶΪλ  sin(D)   = Dֵ,DԶΪλ
  tan(D)  = Dֵ,DԶΪλ  arctan(B)= BķнǶ,ǶԶΪλ
  abs(B)  = Bľֵ              exp(B)   = Bָ
  ln(B)   = BȻ            sqr(B)   = Bƽ
  sqrt(B) = BĿ                int(B)   = Сλȡ
  round(B)= ȡ           jw(B)    = Сλȡ
--------------------------------------------------------------------------
2443.83*0.0008
1972.43*0.0008
2156.85*0.0008
2291.73*0.0008
1547791.55/1100.23
