1:17.48*37+174.8*1.9+8.74*88 =174.8*3.7+174.8*1.9+8.74*2*44 =174.8*3.7+174.8*1.9+174.8*4.4 =174.8*（3.7+1.9+4.4） =174.8*10 =1748 2:(1/1999-1)(1/1998-1)(1/1997-1).(1/1001-1)(1/1000-1) =(1-1999)/1999*(...