Q=int(input())
for _ in range(Q):
  a,b,c,d,e,f=map(int,input().split())
  z0=((a-1)//e)
  z1=((d-1)//b)
  K=abs(z0-z1)
  mod=998244353
  t=pow(10,-K,mod)
  if z0>z1:
    result=1-t
    result%=mod
  else:
    result=0
  if c>f:
    result+=t*(10*pow(11,-1,mod))
  elif c<f:
    result+=t*(pow(11,-1,mod))
  else:
    result+=t*(pow(2,-1,mod))
  result%=mod
  print(result)