Receipt contents:
menu: nm: 1001-Choco Bun
unitprice: 22.000
cnt: x1
price: 22.000
nm: 6001-Plastic Bag Small
unitprice: 0
cnt: x1
price: 0
total: total_price: 22.000
cashprice: 50.000
changeprice: 28.000
menuqty_cnt: 2