So 300* 1.5=450 yuan?

(2) Spring and Autumn 120 days, one shift fee (120/ 1.5)*4=320 barrels, 320*6= 1920 yuan?

Summer, 60 days, 60*5*6= 1800 yuan?

60 days in winter, 60*6=360 yuan?

Electricity bill 240* 10*0.5= 1200 yuan?

Water dispenser 150?

a * * * 1920+ 1800+360+ 1200+ 150 = 5430？

(3)24 classes, 24*50= 1200 students?

Original1200 * 300 = 360,000 yuan?

Now 5430*24= 130320?

Save 360000- 130320=229680 yuan in the first year?

Want 24 * (5430-150) =126720?

Deposit 360000- 126720=233280 yuan.