Receipt contents:
menu: nm: ORIGINAL NO SALT
unitprice: 12,000
cnt: 1
price: 12,000
nm: SOUR CREAM N ONION
unitprice: 17,000
cnt: 2
price: 34,000
sub_total: subtotal_price: 46,000
total: total_price: 46,000
cashprice: 100,000
changeprice: 54,000