744-456:8+142*2=971
456/8=57
142*2=284
744-57=687
687+284=971
(744-456):8+142*2=320
744-456=288
288/8=36
36+284=320
((744-456):8+142)*2=356
36+142=178
178*2=356
744-456:8+142*2=971
456/8=57
142*2=284
744-57=687
687+284=971
(744-456):8+142*2=320
744-456=288
288/8=36
142*2=284
36+284=320
((744-456):8+142)*2=356
744-456=288
288/8=36
36+142=178
178*2=356