Receipt contents:
menu: nm: Chocochip & Walnut
num: 1023-
unitprice: 29.000
cnt: x1
price: 29.000
nm: Plastic Bag Small
num: 6001-
unitprice: 0
cnt: x1
price: 0
total: total_price: 29.000
cashprice: 100.000
changeprice: 71.000
menuqty_cnt: 2