def suti(S):
    if S%d==0:
        return d
    else:
        return S%d
Q=int(input())
for i in range(Q):
    d,a,b=map(int,input().split())
    d-=1
    s=(b-a)//d
    ans=(((1+d)*d)//2)*s
    if a==0:
      if b==0:
        print(0)
        continue
      else:
        a=1
    a=suti(a)
    b=suti(b)
    if a<b:
        ans+=((b-a+1)*(b+a))//2
        print(ans)
    elif a==b:
        print(ans+a)
    else:
        ans+=((d-a+1)*(d+a))//2
        ans+=((b)*(b+1))//2
        print(ans)