(42071-970*40)*7000-48000/80+256740*600
(42071-970*40)*7000-48000/80+256740*600=176940400
970*40= 38800
42071-38800=3271
3271*7000=22897000
48000/80=600
256740*600=154044000
22897000-600= 22896400
22896400+ 154044000 =176940400