-800-900+650×(-8)÷138=

-800-900+650×(-8)÷138=-1737.6811594203

-800 -900 + 650 x (-8) /138 =
-800-900 +(650x (-8))/138 =
-800 - 900 + (-5264) / 138 =
-800-900 + (-38,14493) =
(-1700) + (-38,14493) =
(-1738,14493)

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