6854-(893+854+107) (8300-6500)÷(15×60) 28×19×25 327×99 54000÷8÷125 (105×46-2

6854-(893+854+107) (8300-6500)÷(15×60) 28×19×25 327×99 54000÷8÷125 (105×46-2427)÷27.

(1)6854-(893+854+107),
=6854-854-(893+107),
=6000-1000,
=5000;

(2)(8300-6500)÷(15×60),
=1800÷900,
=2;

(3)28×19×25,
=4×7×19×25,
=(4×25)×(7×19),
=100×133,
=13300;

(4)327×99,
=327×(100-1),
=327×100-327×1,
=32700-327,
=32373;

(5)54000÷8÷125,
=54000÷(8×125),
=54000÷1000,
=54;

(6)(105×46-2427)÷27,
=(4830-2427)÷27,
=2403÷27,
=89.

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