23+14+256÷287-25817×252+2589-2.156-5.7802×7.5681=
22÷31×55+12-2156×2.56=
78-21×52×78=
21×56×26÷58-25=
57×21÷17×26=
78×12×56÷89=
23×56÷78=
23+14+256÷287-25817×252+2589-2.156-5.7802×7.5681=
22÷31×55+12-2156×2.56=
78-21×52×78=
21×56×26÷58-25=
57×21÷17×26=
78×12×56÷89=
23×56÷78=