Question

product of successor of 86 and 100 is

Answer 1

successor of a number is which come after a number like
after 86 comes 87
and after 100 comes 101\
so 
87*101
=8787

Answer 2

The successors of 86 and 100 is 87 and 101 respectively.
.·. Product of 101 and 87 =   
 
 
                    101
                   × 87
                    707
                   808×
                   8787 (Ans)