58 17 5 85 5 n If 'n' is the resultant of the first row, what will be the resultant of the second row?

Rules
(i) (Odd number) x (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)
Solution
1st Row 58   17   5 ⇒ 58 + 17 = 75       [rule (ii)]
⇒     75 ÷ 5 = 15     [rule (iv)]
          = n
2nd Row 85   5   n ⇒ 85   5   15
⇒         85 ÷ 5 = 17   [rule (iv)]
⇒       17 x 15 = 255     [rule (i)]
∴ Resultant of second row = 255