1506B.cpp

#include <bits/stdc++.h>
using namespace std;
using ll = long long;

int main()
{
    cin.tie(0);
    ios::sync_with_stdio(0);

    int t;
    cin >> t;
    while (t--)
    {
        int n, k;
        cin >> n >> k;
        string s;
        cin >> s;

        int count = 0;
        int i = 0;

        while (i < n && s[i] != '*')
            i++;
        count++;

        while (true)
        {
            int pos = -1;
            for (int j = i + 1; j <= i + k && j < n; j++)
            {
                if (s[j] == '*')
                    pos = j;
            }
            if (pos == -1)
                break;
            count++;
            i = pos;
        }

        cout << count << "\n";
    }

    return 0;
}