6/35:(4,5-23/7) Помогите пж

Question

6/35:(4,5-23/7)
Помогите пж

Answer 1

(6/35)/(45/10-23/7)=12/85
1)45/10-23/7=315/70-230/70=85/70
2)(6/35)/(85/70)=12/85