3/7 x 1/2 divided by ( 3/5 - 1/3)

3/7 x 1/2 =   3/14

(3/5 - 1/3) =  [ 9 - 5 ] / 15  =   4 / 15

So

(3/14)   /    (4/15)   =

(3/14) * ( 15/4)  =

45/ 46

numerator first:

3/7 *1/2 = 3/14

denominator:

3/5 - 1/3 = 9/15-5/15 (common denominator) = 4/15

3/14 divided by 4/15 is the same as multiplying by 15/4

3/14 *15/4 = 45/46 final answer