(3 / 5 + 2.4 / 2 / 3) / 0.7 simple algorithm

(3 / 5 + 2.4 / 2 / 3) / 0.7 simple algorithm

First calculate the part in brackets, and then add the decimal into fractions. Finally, divide by 0.7 and multiply by 10 out of 7. If there is no problem, the answer is 44 out of 7

Divide 9 out of 2 x 4 out of 5 into 9 out of 2 x 4 out of 5,

The original formula is 18x4 / 4 divided by 18x4 / 4
=5 / 4 x 5 / 4
=25 out of 16

Calculation (1), 15.8 + 13 5 / 6 + 15 4 / 5 (2), (- 1 / 7) + (- 2 / 7) + 1 3 / 7 (3), and
(17 5 / 8) + (31 3 / 4) + (- 4 1 / 16) (4), (- 5) + 3.75 + [13 3 / 7 + (- 3 3 3 / 4) + (7)] (5), 1 + (- 2) + (- 3) + 4 + 5 + (- 6) + (- 7) + 8 + 9 + (- 10) + (- 11) + 12

(1) 8 + 13 5 / 6 + 15 4 / 5
=(15+13+15)+(0.8+5/6+0.8)
=43+73/30
=45 and 13 / 30
(2) , (- 1 / 7) + (- 2 / 7) + 1 / 7
=-1 + 1 and 3 / 7
=3/7
(3) (5 / 8 of 17) + (3 / 4 of 31) + (- 1 / 16 of 4)
=（17+31-4）+（5/8+3/4-1/16）
=44+21/16
=45 and 5 / 16
(4) 75 + [13 3 / 7 + (- 3 3 / 4) + (7)]
=-5 + 3.75 + 13 and 3 / 7 - 3 and 3 / 4 + 7
=(- 5 + 13 and 3 / 7 + 7) + (3.75-3 and 3 / 4)
=15 and 3 / 7 + 0
=15 and 3 / 7
（5）、1+（-2）+（-3）+4+5+（-6）+（-7）+8+9+（-10）+（-11）+12
=[1+（-2）+（-3）+4]+[5+（-6）+（-7）+8]+[9+（-10）+（-11）+12]
=0+0+0
=0