1.139/15+(5/4-4/5)
=139/15+9/20
=583/60
2.
1665(1+10001+100010001)
-----------------------
1998(1+10001+100010001)
=5/6
3.11111*11111
--------------
55555*55555
=1/25
1.139/15+(5/4-4/5)
=139/15+9/20
=583/60
2.
1665(1+10001+100010001)
-----------------------
1998(1+10001+100010001)
=5/6
3.11111*11111
--------------
55555*55555
=1/25