Receipt contents:
menu: nm: PAKET CHICKEN 4
unitprice: 29,000
cnt: 1
price: 29,000
nm: KOREAN COLD TEA
unitprice: 9,000
cnt: 1
price: 9,000
sub_total: subtotal_price: 38,000
service_price: 1,900
tax_price: 3,990
total: total_price: 43,890
cashprice: 50,000
changeprice: 6,110