Receipt contents:
menu: nm: VANBOOLEN
price: 9,000
nm: JONGKONG
discountprice: -4,650
price: 15,500
nm: PLASTIK KECIL
price: 0
nm: SENDOK BEBEK
price: 0
sub_total: subtotal_price: 19,850
total: total_price: 19,850
cashprice: 20,000
changeprice: 150