8 - 3 + 5 * 1
( 8 - 3 ) + 5 * 1
( 8 - 3 + 5 ) * 1
8 - 3 + (5 * 1)
( 8 - 3 ) + ( 5 * 1 )
( ( 8 - 3 ) + 5 ) * 1
8 - ( 3 - 5 ) * 1
8 - ( 3 - 5 * 1)
( 8 - ( 3 - 5 ) ) * 1
8 - ( (3 - 5 ) * 1 )
8 - ( 3 - ( 5 * 1 ) )