M=998244353
t=int(input())
for _ in range(t):
 a,b,c,d,e,f=map(int,input().split())
 x=min((a-1)//e,(d-1)//b);a-=e*x;d-=b*x;r=0
 if a-e<1:
  x=(d-1)//b;p=pow(10,-x,M)
 else:
  x=(a-1)//e;p=pow(10,-x,M);r+=1-p
 k=pow(11,-1,M)
 if c>f:r+=p*10*k
 elif c<f:r+=p*k
 else:r+=p*pow(2,-1,M)
 print(r%M)