Receipt contents:
menu: nm: Kimchi P
unitprice: 36.000
cnt: 1x
price: 36.000
nm: Fre ice grentea
unitprice: 0.000
cnt: 1x
price: Rp 0.000
total: total_price: 36.000
cashprice: Rp 51.000
changeprice: 15.000