import sys

read = sys.stdin.buffer.read
readline = sys.stdin.buffer.readline
readlines = sys.stdin.buffer.readlines

def f(D, N):
    # sum_{i=1}^N
    q, r = divmod(N, D)
    x = D * (D + 1) // 2 * q
    x += r * (r + 1) // 2
    return x

T = int(readline())
for _ in range(T):
    D, A, B = map(int, readline().split())
    x = f(D - 1, B) - f(D - 1, A - 1)
    print(x)