October: -27372 yuanThis month's profit: +6912.15 yuan2020:+34,277.8 yuan
November: 10,204.78 yuanJuly: -356.24 yuanAnother solution
This year's profit:-17,640.13 yuanThis month's profit: +6912.15 yuan2022:-84,963.5 yuan
Strategy guide 12-13
Strategy guide