In a certain code language,
'A + B' means 'A is the mother of B',
'A - B' means 'A is the brother of B',
'A × B' means 'A is the wife of B' and
'A ÷ B' means 'A is the father of B'.
Based on the above, how is M related to O if 'K ÷ L × M - N + O'?
Which two numbers should be interchanged to make the given equation correct?
9 × (34 - 15) + (105 ÷ 7) + 28 + (13 × 4) = 218
(Note: Interchange should be done of entire number and not individual digits of a given number)