734619
110907
524232
995001
678297
1548??
now what could be the missing area in the question Answers.
A) 80  B) 81  C) 82  D) 83  E) 84
there is a specific addition/subtraction in each two digits   73-27= 
<gadget id="calculator">73-27</gadget>
<output>46</output>
46 46-27=19   11-2= 
<gadget id="calculator">11-2</gadget>
<output>9</output>
9 9-2=7   same    67+15= 
<gadget id="calculator"> 67+15</gadget>
<output>82</output>
82 82+15=97   15+33= 
<gadget id="calculator">15+33</gadget>
<output>48</output>
48 48+33=81   ANSWER:81
<result>B</result>
734619
110907
524232
995001
678297
1548??
now what could be the missing area in the question