Receipt contents:
menu: nm: LAPIS SINGAPUR
unitprice: @ 15000
cnt: 2X
discountprice: -9,000
price: 30,000
nm: LEMPER
unitprice: @9000
cnt: 2X
discountprice: -5,400
price: 18,000
nm: AREM AREM
discountprice: -2,400
price: 8,000
nm: MIKA BESAR
price: 0
nm: PLASTIK SEDANG
price: 0
sub_total: subtotal_price: 39,200
total: total_price: 39,200
cashprice: 100,000
changeprice: 60,800