Nominal numbers means if your sales in Zimbabwe are up 2,000% year over year in Zimbabwe Dollars, it's likely you sold 98% fewer goods in real terms, adjusted for inflation.
When they release sales numbers, they are not adjusted for inflation. If you want big increases in sales, just sell in a high inflation environment.
Retailers in Hungary in 1946 had some spectacular gains in their retail sales numbers. However, their inflation rate was about 41,900,000,000,000,000%, with prices doubling every 15-hours.