$**$ You are to write an IAS program to compute the results of the following equation.

Y $=1+2+...+$N

Assume that the computation does not result in an arithmetic overflow and that Y and N are positive integers with N$>=1.$ Note: The IAS did not have assembly language, only machine language.

$($a$)$ Use the equation Y $=$ N$($N$+1)/2$ when writing the IAS program.

$($b$)$ Do it the $$hard way,$$ without using the equation from part $($a$).$

$**$ Given the memory contents of the IAS computer shown below,

Address Contents

$08$A $010$FA$210$FB

$08$B $010$FA$0$F$08$D

$08$C $020$FA$210$FB

show the assembly language code for the program, starting at address $08$A$.$