Помогите решить пример... 3 1/3 : 1 19/21 * 2 3/14 =?

Question

Помогите решить пример...
3 1/3 : 1 19/21 * 2 3/14 =?

Answer 1

3 1/3 / 1 19/21 * 2 3/14 = 10/3 * 21/40 * 2 3/14 = 7/4 * 31/14 = 31/8 = 3 7/8