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
  qfs(B)  = ȡBĸ              qzs(B)   = ȡB
--------------------------------------------------------------------------
48789.62/5235.22
9.32*5235.22
0.94*52352.2
48789.62/52352.2
