Question

 8000:(25*4)*7=
832-328-247=
903-(178+359):3=

Answer 1

$1) frac{8000*7}{25*4}= frac{8000*7}{100}=80*7=560$
$2)832-328-247=504-247=257$
$3)903-frac{178+359}{3}=903- frac{537}{3}=903-179=724$