Question

7/2÷5/2×3/2÷15/14×7/12÷5/2 3/2

Answer 1

21(12)/20
which is obtained sorry for wrong

Answer 2

Arithmetic,

$\frac{7}{2 } \div \frac{5}{2} \times \frac{3}{2} \div \frac{15}{14} \times \frac{7}{12} \div \frac{5}{2} \times \frac{3}{2}$
= 7/2 × 2/5 × 3/2 × 14/15 × 7/12 × 2/5 ×3/2

=1029/1500

That's it
Hope it helped (^o^).