{-# LANGUAGE BangPatterns #-}
import qualified Data.Vector.Fusion.Stream.Monadic as VFSM
main :: IO ()
main = do
  q <- readLn :: IO Int
  rep q $ \_ -> do
    [d, a, b] <- map (read :: String -> Int) . words <$> getLine
    if a == 0
      then print $ func b d - func 0 d
      else print $ func b d - func (a - 1) d

func :: Int -> Int -> Int
func x d =
  let
    (q, r) = divMod x (d - 1)
  in
    d * (d - 1) `div` 2 * q + r * (r + 1) `div` 2

stream :: Monad m => Int -> Int -> VFSM.Stream m Int
stream !l !r = VFSM.Stream step l
  where
    step x
      | x < r     = return $ VFSM.Yield x (x + 1)
      | otherwise = return $ VFSM.Done
    {-# INLINE [0] step #-}
{-# INLINE [1] stream #-}

-- | rep 10 -> 0 1 2 3 4 5 6 7 8 9
rep :: Monad m => Int -> (Int -> m ()) -> m ()
rep n = flip VFSM.mapM_ (stream 0 n)
{-# INLINE rep #-}