Simple Approach!
Intuition\n Describe your first thoughts on how to solve this problem. \n\n# Approach\n Describe your approach to solving the problem. \n\n# Complexity\n- Time 
# Intuition\n<!-- Describe your first thoughts on how to solve this problem. -->\n\n# Approach\n<!-- Describe your approach to solving the problem. -->\n\n# Complexity\n- Time complexity:\n<!-- Add your time complexity here, e.g. $$O(n)$$ -->\n\n- Space complexity:\n<!-- Add your space complexity here, e.g. $$O(n)$$ -->\n\n# Code\n```\nclass Solution {\n  int numberOfPairs(List<int> nums1, List<int> nums2, int k) {\n\n    int count = 0;\n\n    for(var num1 in nums1){\n        for(var num2 in nums2){\n            if(num1 % (num2 * k) == 0){\n                count ++;\n            }\n        }\n    }\n    return count ;\n  }\n}\n```
['Dart']