2 out of 5 of () is 8 out of 15; 2 out of 9 is 8 out of 3

8/15÷2/5=4/3
2/9÷8/3=1/12
A: (2 / 5 of 4 / 3) is 8 / 15; 2 / 9 is 8 / 3 (1 / 12)

3 / 25-3 / 8 / 28-3 / 10

Original formula = 3 / 25-3 / 8 △ 15 / 28-3 / 10
=3/25-3/8×28/15-3/10
=3/25-7/10-3/10
=-3/25-1
=--22/25

(5 / 6-5 / 9) * 18 / 5, 2 / 27 * (27 / 15 * 28) * 25 / 15, 3 / 8

(5 / 6-5 / 9) * 18 / 5
=5/6*18/5-5/9*18/5
=3-2
=1
2 of 27 * (27 of 15 * 28) * 2 of 15
=（2/27*27/28）*（15*2/15）
=1/14*2
=1/7
25 and 3 / 8 * 8
=25*8+3/8*8
=200+3
=203

(5 / 8 + 2 / 3) times 24 =? 4 / 7 times 3 / 8 + 4 / 7 times 5 / 8 =?
7 out of 8 times 38 out of 9 times 4 out of 7 times 3 out of 38 =? 301 times 23 out of 300 =? Use simple calculation to calculate the following questions

Hello: (5 out of 8 + 2 out of 3) × 24 = 5 / 8 × 24 + 2 / 3 × 24 = 15 + 16 = 31 7 out of 4 × 8 out of 3 + 7 out of 4 × 8 out of 5 = 4 / 7 × (3 / 8 + 5 / 8) = 4 / 7 × 1 = 4 / 7 8 out of 7 × 9 out of 38 × 7 out of 4 × 38 out of 3 7 × 38 × 4 × 3 = -- -- 8 × 9 × 7

12.5 times {- 2 1 / 3} times {- 8} times 3 / 7 {- 4 / 1 + 6 / 1-8 / 1 + 12 / 1} times {- 24} - 8 / 5 times {16-3 1 / 5 + 0.0
There's a process to multiply {- 7} by 13 out of 52 and 14

12.5 times {- 2 1 / 3} times {- 8} times 3 / 7 = 12.5 * (- 8) * (- 7 / 2) * 3 / 7 = - 100 * (- 3 / 2) = 150 {- 4 / 1 + 6 / 1-8 / 1 + 12 / 1} times {- 24} = - 1 / 4 * (- 24) + 1 / 6 * (- 24) - 1 / 8 * (- 24) + 1 / 12 * (- 24) = 6-4 + 3-2 = 3-8 / 5 times {16-3 1 + 0.0 = - 5 / 8 * 16 + 5 / 8 *

2 out of 5 of () is 8 out of 15; 2 out of 9 is 8 out of 3