Di jawab pakai cara ya kak

1)3/2x11/5
=33/10
=3 3/10
2)2,5x0,8
=25/10x8/10
=200/100
=2
3)0,7x1 2/3
=7/10x5/3
=35/30
=1 5/30
4)5x1 5/6
=5/1x11/6
=55/6
=8 7/6
5)2,07x0,03
=207/100x3/100
=621/10000
=0,0621