T = int(input())
for _ in range(T):
    d,a,b = map(int, input().split())
    if b==0:
        print(0)
        continue
    if a==0:
        a = 1
    q = (b+1-a)//(d-1)
    r = (b+1-a)%(d-1)
    ans = q*d*(d-1)//2
    if r==0:
        print(ans)
        continue
    a0 = a%(d-1)
    if a0==0:
        a0 = d-1
    a1 = (a+r-1)%(d-1)
    if a1==0:
        a1 = d-1
    if a0<=a1:
        ans += (a1+a0)*r//2
    else:
        a2 = (a0+r)%(d-1)
        a3 = (a0+d-1-1)%(d-1)
        ans += (d-1)*d//2-(a3+a2)*(d-1-r)//2
    print(ans)