Receipt contents:
menu: nm: ELEPHANT READ BEAN
unitprice: 12,000
cnt: 1
price: 12,000
nm: chapsal twister donnut
unitprice: 10,000
cnt: 1
price: 10,000
total: total_price: 22,000
cashprice: 22,000
changeprice: 0
menuqty_cnt: 2