Simplify (Multiplication and division of fractions)

2/5 ×15/7 ÷ 3/14

To simplify, first multiply the fractions:

(2/5) * (15/7) = 30/35 = 6/7

Then divide by the third fraction:

(6/7) ÷ (3/14) = (6/7) * (14/3) = 84/21 = 4

Therefore, 2/5 * 15/7 ÷ 3/14 simplifies to 4.