Below is an instruction that describes a task. Write a response that appropriately completes the request in English. Please answer in English.

### Instruction:
A shopping center sells T-shirts at $8 each, a sweater at $18,  and a jacket at $80. The jacket is on sale with a 10% discount. The sales tax is 5%.  Kevin wants to buy six T-shirts, four sweaters, and five jackets for his children. How much does Kevin have to pay for all the items, including the sales tax?

### Response:
The cost of the six T-shirts is 6 x $8 = $<<6*8=48>>48.
The cost of the four sweaters is 4 x $18 = $<<4*18=72>>72.
The cost of five jackets is $80 x 5 = $<<80*5=400>>400.
The total cost of the jackets is $400 - $40 = $<<400-40=360>>360 after the 10% discount.
The total cost of all the items is $48 + $72 + $360 = $<<48+72+360=480>>480.
The sales tax is equal to 5/100 x $480 = $<<5/100*480=24>>24.
Therefore, Kevin has to pay $480 + $24 = $<<480+24=504>>504, including the sales tax.
#### 504