func main()
	var t: int :: cui@inputInt()
	for(1, t)
		var d: int :: cui@inputInt()
		var a: int :: cui@inputInt()
		var b: int :: cui@inputInt()
		var ans: int :: 0
		if(a = b)
			do ans :: f(a, d)
		else
			do ans :+ (b - a + 1) / (d - 1) * d * (d - 1) / 2
			var s: int :: f(a, d)
			var e: int :: f(b, d)
			if(s = e)
				do ans :+ s
			elif(s < e)
				do ans :+ sig(s, e)
			else
				do ans :+ sig(s, d - 1) + sig(1, e)
			end if
			
			func sig(s: int, e: int): int
				ret(e * e + e - (s - 1) * (s - 1) - (s - 1)) / 2
			end func
		end if
		do cui@print("\{ans}\n")
		
		func f(a: int, d: int): int
			ret 1 + (a + d - 2) % (d - 1)
		end func
	end for
end func