Receipt contents:
menu: nm: TUNA & CHEDDAR
num: 01110000
price: 55,000
nm: ONION RINGS
num: 04100000
price: 19,800
nm: AQUA BTL
num: [13100000
price: 6,600
total: total_price: 81,400
cashprice: 100,000
changeprice: 18,600