2/15 × (1/2+2/3-3/4): 3/8
1) 1|2 +2|3=3/6 +4/6 = 7/6
2) 7/6 -3/4 =14/12-9/12 = 5/12
3) 2/15 *5/12=1/3*1/6=1/18
4) 1/18 : 3/8=1/18*8/3=4/27
