6 11/12 ÷ 9 1/5 * 12/8
mixed numbers are a pain. You have to convert them to fractions to do much with them. So, you have
(83/12)÷(46/5)*(12/8)
= (83/12)(5/46)(12/8)
= (83*5*12)/(12*46*8)
= 415/368
or 1 47/368
(83/12)÷(46/5)*(12/8)
= (83/12)(5/46)(12/8)
= (83*5*12)/(12*46*8)
= 415/368
or 1 47/368