Receipt contents:
menu: nm: CINNAMON SUGAR
unitprice: 17,000
cnt: 1
price: 17,000
nm: TRIPPLE CHEESE
unitprice: 17,000
cnt: 1
price: 17,000
sub_total: subtotal_price: 34,000
total: total_price: 34,000
cashprice: 50,000
changeprice: 16,000