80×7-42:(50786-50780)×9

Question

80×7-42:(50786-50780)×9

Answer 1

50786-50780=6
80*7=560
42\6=7
7*9=63
560-63=497

Answer 2

50786-50780=6
80*7=560
42:6=7
7*9=63
560-63=497