(9-1 1/3×4 2/7)×21/46

Question

(9-1 1/3×4 2/7)×21/46

Answer 1

....................=1 1/2
1)   1 1/3 * 4 2/7=4/3 * 30/7=40/7=5 5/7
2)    9-5 5/7=3 2/7
3)   3 2/7 * 21/46=23/7 * 21/46=3/2=1 1/2