import sys
def input():
	return sys.stdin.buffer.readline()[:-1]

def f(d, x):
	if x <= 0:
		return 0
	else:
		res = 0
		res += (d * (d-1) // 2) * ((x-1) // (d-1))
		res += ((x-1) % (d-1) + 1) * ((x-1) % (d-1) + 2) // 2
		return res

for _ in range(int(input())):
	d, a, b = map(int, input().split())
	print(f(d, b) - f(d, a-1))