(1)=8*0.125+1+1 =1+1+1 =3(2)=12*4-5*5-20*2-12*3 =48-25-100-36 =-113
=-8*5+2004+1=-40+2004+1=-40+2005=1965=-60*(-5/4)-60*12/5-60*(-3/2)-60*15/3=48-25-40+12=-5
