T=int(input())
for i in range(T):
  x,y=input().split()
  if y=='100.000':
    print(x)
  else:
    y=y.replace('.','')
    x,y=int(x),int(y)
    ans=0
    for i in range(1,min(1001,x+1)):
      if y*i%1000==0:
        ans+=1
      else:
        c=100*i
        cc=10**5
        p,q=y*c//cc,(y+1)*c//cc  
        if p!=q:
          if (y+1)*i%1000!=0:
            ans+=1
    if x>1000:
      ans+=x-1000
    print(ans)