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
--------------------------------------------------------------------------
3500*0.85
2.81*307.57
25*1.6
40*0.65
40*1.65
1680/2
252+29+75+1+7+1
41+24+34+40+22+34+24+27+15+28+50
41+24+34+40+22+34+24+27+15+28+50+108+376+12+174
1009+2136+1154+582+738+381+291+371+661+792+365
244+92+46+166+284+134+500
1009+1466+1154+582+738+381+291+371+661+792+365
146+58+116+120+356+66+46+86+18+20+54+40+20
146+58+116+120+356+66+46+86+18+14+14+54+40+20
178+36+80+32+94+32+46+12+46+16+10
158+106+96+16+34+14+76+36+36+26+58+8+46+24+4
118+80+64+12+48+42+7+6
132+64+16+64+12+48+42+7+6
37+32+21+16+11+5+102+33+21+13
30+83+152+66+32+14+55+26+78+20+51+24+30
6/119
5600*0.85
5600*0.6
4600*0.85
770*0.09
2560*0.6
(1168.7+104.01*2.25+309.11*0.004+593.7-349.36*0.08)*0.0333
(1168.7+104.01*2.25+309.11*0.004+593.7-349.36*0.08)*0.0333+6982.4*0.0767
10.9*1.08
462*0.007
30*30.26
1800*0.8
34544.16*0.07
34544.16*0.007
sqrt(25)
sqrt(1687500)
