Calculation: 6 / 15 * 101-8 / 15, 3 / 7 divided by (8 / 5 * 8 / 5-1 / 4), (5 / 6 + 3 / 8 + 3 / 4 + 1 / 3) * 2.4

Calculation: 6 / 15 * 101-8 / 15, 3 / 7 divided by (8 / 5 * 8 / 5-1 / 4), (5 / 6 + 3 / 8 + 3 / 4 + 1 / 3) * 2.4

6 / 15 * 101-8 / 15 = 6 / 15 * 101-6 / 15-2 / 15 = 6 / 15 * (101-1) - 2 / 15 = 2 / 5 * 100-2 / 15 = 40-2 / 15 = 39 and 13 / 153 / 7 ^ (8 / 5 * 5 / 8-1 / 4) = 3 / 7 ^ (1-1 / 4) = 3 / 7 ^ (3 / 4 = 3 / 7 × 4 / 3 = 4 / 7 (5 / 6 + 3 / 8 + 3 / 4 + 1 / 3) * 2.4 = 0.4 * 5 + 0.3 * 3 + 0.6 * 3 + 0.8 = 2 + 0.9 + 1.8 + 0.8 =

3 minus 2 / 3 divided by 4 / 15 minus 1 / 7
emergency

=3-2/3×15/4-1/7
=6/2-5/2-1/7
=1/2-1/7
=5/14

5 / 2 divided by 5 / 3 + [7 / 6-3 / 10] divided by 2 / 15 - [5 / 7 * 1.6 + 1 / 2 divided by 7 / 5]

5/2÷5/3+﹙7/6-3/10﹚÷2/15-﹙5/7×1.6+1/2÷7/5﹚
＝5/2×3/5＋﹙35/30-9/30﹚×15/2-﹙5/7×1.6+0.5×5/7﹚
＝3/2+13/2-1.5
＝13/2
＝6.5

[1.9 + 19% times (4.8-2.4)] divided by (53 times 0.25 + 30.6 times 0.25) =?

[1.9 + 19% times (4.8-2.4)] divided by (53 times 0.25 + 30.6 times 0.25)
=【1.9*(1+0.24)】/【0.25*（53+30.6）】
=1.9*1.24/(83.6/4)
=2.356/20.9
=0.1127272727.