Question

1 7|8*(5|6+1,3)-2,45=

Answer 1

1 7/8*(5/6+1,3)-2,45=1.55
1)5/6+1.3=5/6+13/10=50/60+78/60=128/60
2)1 7/8*128/60=15/8*128/60=4
3)4-2.45=1.55