In many Eastern restaurants, tipping isn’t a strict 10% — it’s more like a “rounded thank‑you.” If the bill is 2,340 ₽, you might leave 2,500 ₽ and say “Keep the change” or “Shukran” (thank you). If the bill is 1,950 ₽ and you give exactly 2,000 ₽, it can be read as “the food was just okay.” It’s also better not to place large bills on the tray — hand them directly to the waiter so it’s clear the tip is for them, not for a shared pool.