What is the value of $$\frac{7 of 14 \div 4}{5 \times 4 \div 2} + \frac{6 \div 12 \times 3}{5 \div 25 \times 2} + \frac{15 \div 5 \times 6}{5 \times 15 \div 6}$$?

A

7.64

B

7.44

C

7.62

D

7.22