(4300731)-?=2535618  Pick one
A) 1865113  B) 1775123  C) 1765113  D) 1675123  E) None of them
Let 4300731-x=2535618   then x=4300731-2535618= 
<gadget id="calculator">4300731-2535618</gadget>
<output>1_765_113</output>
1765113   Answer is 1765113
<result>C</result>
(4300731)-?=2535618