99/10 : ( 79 3/16 - 1 1/12 - 77 1/2 + 2 19/48 ) ×( 37 41/45 - 36 4/5) =

9 9/10 ÷( 79 3/16 - 1 1/12 - 77 1/2 + 2 19/48 ) ×( 37 41/45 - 36 4/5) = 3 2/3
79 3/16-1 1/12=1267/16  -  13/12 =(1267 × 3  -  13 × 4)/48 = 3801/48  -  52/48 =  3749/48 = 78 5/48
78 5/48-77 1/2=3749/48  -  155/2 = (3749 × 1  -  155 × 24)/48 = 3749/48  -  3720/48 =  29/48
29/48+2 19/48=29/48  +  115/48 =   144/48 = 3
37 41/45-36 4/5=1706/45  -  184/5 = (1706 × 1  -  184 × 9)/45 = 1706/45  -  1656/45 =  50/45 = 10/9 = 1 1/9
9 9/10÷3=99/10  ×  1/3 =  33/10 = 3 3/10
3 3/10  ×  1 1/9 = 33/10  ×  10/9 =  11/3 = 3 2/3