Gấp ạ. Các ah cj giúp iem vsss

$#AP$

`30 ÷ 2 . 8. 4 = 15 . 8 . 4 = 120 . 4=480`

`125 ÷ 5^3 . 170 = 125 ÷125 . 170 = 1.170=170`

`(25 ÷5^2 .30)÷÷15.7 = (25 ÷25 .30)÷15.7=30÷15.7=2.7=14`

`(15÷3.5^2)÷(20÷2^2)=(5.25)÷(20÷4)=125 ÷5 = 25`

`3^2 .5-2^2.7+1.5=9.5 - 4.7+5=45-28+5=22`

` 7^2 .3 -5^2 . 3 = (49-25).3 =24.3=72`

`(24.5 -5^2 . 2) ÷ (5.2)-3 = (100 - 25.2)÷ 10-3= 70 ÷10-3=7-3=4`

`(6.5^2 - 13.7).2-2^3 . (7+3) =(6.25-91).2 - 8.10 =59 . 2-80=118-80=38`