24 7 81 x 27 19 If 'x' is the resultant of the first row, what will be the resultant of the second row?

Rules
(i) (2-digit even number) ÷ ( Even number)
(ii) (Even number) x (Prime number)
(iii) (Odd number) + (Odd number)
(iv) (3-digit number) - (2-digit perfect square number)
(v) (3-digit number) ÷ (2-digit non-perfect square number)
Solution
1st Row 24   7   81 ⇒ 24 x 7 = 168       [rule (ii)]
⇒     168 - 81 = 87     [rule (iv)]
        = x
2nd Row x   27   19 ⇒ 87   27   19
⇒         87 + 27 = 114     [rule (iii)]
⇒         114 ÷ 19 = 6     [rule (v)]
∴ Resultant of second row = 6