15 8 21 p 3 27 If 'p' is the resultant of the first row, what will be the resultant of the second row?

Rules
(i) (odd number) + (Composite odd number)
(ii) (Even number) + (Odd number)
(iii) (Even number) → (Perfect square number), then (Perfect square number) - (Even number)
(iv) (Odd number) ÷ (Prime odd number)
(v) (Odd number) - (Even number)
1st Row   15   8   21 ⇒ 15 - 8 = 7     [rule (v)]
⇒       7 + 21 = 28     [rule (i)]
2nd Row   p   3   27 ⇒ 28   3   27
⇒ 28 + 3 = 31     [rule (ii)]
⇒ 31 + 27 = 58     [rule (i)]
∴ Resultant of second row = 58