<p>The <strong>frequency</strong> of an element is the number of times it occurs in an array.</p>
<p>You are given an integer array <code>nums</code> and an integer <code>k</code>. In one operation, you can choose an index of <code>nums</code> and increment the element at that index by <code>1</code>.</p>
<p>Return <em>the <strong>maximum possible frequency</strong> of an element after performing <strong>at most</strong></em><code>k</code><em> operations</em>.</p>