简算题!可不可以帮我解决

问题描述:

简算题!可不可以帮我解决
(1):(1又1/1998×8.12+5又31/75÷2/3×8又1997/1998)÷4又11/48=
(2):2÷(2又2/9×4/5+2又2/9×6.2-5.8×2又2/9-1/5×2又2/9)×9/20=

(1)=(1999/1998*203/25+406/75*3/2*8又1997/1998)÷203/48
=1999/1998*203/25*48/203+203/25*48/203*8又1997/1998
=【1999*48+(8*1998+1997)*48】/25*1998
=48*(10*1998)/25*1998
=96/5
(2)提取相似公因数
=2