October: -27372 yuanFebruary: -5741.46 yuanThis year's profit:-17,640.13 yuan
August: -5766.84 yuanNovember: 10,204.78 yuanAnother solution
2020:+34,277.8 yuanJune: 218.53 yuanJuly: -356.24 yuan
Strategy guide
Strategy guide
Strategy guide
Strategy guide 12-13