So just use a calculator but here goes
3^1=3
3^2=9
3^3=27
3^4=81
3^5=243
3^6=729
and 3^7 is 2187 which is excluded
Associative property (associative laws)
A multiple in math is like 9: 9,18,27,36,45,54 or like 2:2,4,6,8,10,12,14
543,100.....543,200......543,300