a. [(1+15)*15]: 2+1=
[16*15]:2+1=
240:2+1
120+1=
121
b.2*[(1+100)*100]:2+101=
2*[101*100]:2+101=
2*10100:2+101=
20200:2+101=
10100+101=
10201
c.216+2*[(1+215)*215]:2
=216+2*(216*215):2
=216+2*46440:2
=216+92880:2
=216+46440
=46656
d. 4046132-2011
=4044121