22×99-11/8×644.6+588.8×(-11/8)+233.4×11/8
=22×(100-1)-11/8(644.6-233.4+588.8)
=(2200-22)-11/8×1000
=2178-11×125
=2178-1375
=803
或者(先取出11)
=11*(2*99-125)
=11*(198-125)
=11*73
=803
22×99-11/8×644.6+588.8×(-11/8)+233.4×11/8
=22×(100-1)-11/8(644.6-233.4+588.8)
=(2200-22)-11/8×1000
=2178-11×125
=2178-1375
=803
或者(先取出11)
=11*(2*99-125)
=11*(198-125)
=11*73
=803