Receipt contents:
menu: nm: Populaire Chocolate
unitprice: 4,500
cnt: 1
price: 4,500
nm: Paddle Pop Choco Magma
unitprice: 3,000
cnt: 1
price: 3,000
sub_total: subtotal_price: 7,500
tax_price: 750
total: total_price: 8,250
total_etc: 50
cashprice: 10,000
changeprice: 1,800