t=int(input())
for _ in range(t):
    d,a,b=map(int,input().split())
    
    def calc(n):
        if n==0:
            return 1
        else:
            block=(n-1)//(d-1)
            k=n%(d-1)
            if k==0:
                k=d-1
            return 1+(block*((d-1)*d))//2+(k*(k+1))//2
    
    if a==0:
        ans=calc(b)-calc(a)
    else:
        ans=calc(b)-calc(a-1)
    print(ans)