function main()
    t = int(input())
    ns = [inputs() for _ = 1:t]
    for (n_, s_) = ns
        n = int(n_)
        s = int(replace(s_, "." => ""))
        ans = max(n - 1000, 0)  # 1000以下の場合は全探索
        for i = 1:min(n, 1000)
            # S*i <= goukei <= (S+0.001)*iとなる整数goukeiの個数をカウント
            goukei = ceil(Int, s * i / 1000) * 1000
            if s * i <= goukei < (s + 1) * i
                ans += 1
            end
        end
        println(ans)
    end
end
# --------input func----------
input() = readline()
inputs() = split(readline())
int(s::AbstractChar) = parse(Int, s)
int(s::AbstractString) = parse(Int, s)
int(v::AbstractArray) = map(x -> parse(Int, x), v)
debug(x...) = println(stderr, x...)
if isequal(abspath(PROGRAM_FILE), @__FILE__)
    main()
end