$%1 = %0$BOX $=$ BOX
 
$%1 = %0$BOX $=$ BOX
 
$%1 = %0$BOX $=$ BOX
 
$%1 = %0$BOX $=$ BOX
 
$%0 = $ BOX $\times\quad$ BOX $=$ BOX
$%0 = $
BOX
 
BOX
$=$ BOX