start by writing the multiplication in this form
start multiplying from right to left.
[tex]3\cdot0=0[/tex]write the first number down
continue by multiplying the next number from right to left
[tex]8\cdot3=24[/tex]write the number down, since there are no more numbers to multiply for write the wole number
this means that
[tex]80\cdot3=240[/tex]