T=int(input())
mod=10**9+7
for _ in range(T):
  a,N=map(int,input().split())
  ans=0
  for i in range(1,a):
    if i>N:
      break
    ans+=int((a*i)**0.5)
    ans%=mod
  if a-1>=N:
    print(ans)
    continue
  K=[0]*a
  s1=0
  for i in range(a,2*a):
    #i**2以上(i+1)**2未満のaの倍数の個数
    K[i-a]=(((i+1)**2-1)//a)-((i**2-1)//a)
    s1+=K[i-a]*i
    s1%=mod
  x=int((N//a)**0.5)
  #x>=1
  s1%=mod
  s2=((3*a-1)*a//2)%mod
  s3=3*a
  kosu=a
  if x>=2:
    ans+=s1*(x-1)%mod
    ans+=(a*kosu%mod*((x-2)*(x-1)*(2*x-3))//3)%mod
    ans+=(((x-2)*(x-1))//2)*a%mod*s3%mod
    ans+=(x-2)*(x-1)*s2%mod
    ans%=mod
  #(x**2)*a~N
  kk=N-((x**2)*a)+1
  t=a*x
  for i in range(a):
    if kk-(K[i]+2*(x-1))<=0:
      ans+=kk*(i+t)
      ans%=mod
      break
    else:
      kk-=(K[i]+2*(x-1))
      ans+=(i+t)*(K[i]+2*(x-1))%mod
      ans%=mod
  print(ans)