492+(-171):9*328-1872 = -2175-125:5*42+526 = (64+(-9)*4):(-25) =

492+(-171):9*328-1872
= 492+19*328-1871
= 492+6.232-1872
= 4.852

-2175-125:5*42+526
= -2175-1.050+526
= -2.699

[64+(-9)*4]:(-25)
= (64-36):(-25)
= -1,12