title: Override functionalities in Woocommerce Reports section
body: <p>I need to customize the Reports in WooCommerce, so I have to edit the core file <code>class-wc-report-sales-by-date.php</code>, such file doesn't use any hook. </p>
  
  <p>Check this in WC source code: <a href="https://github.com/woocommerce/woocommerce/blob/master/includes/admin/reports/class-wc-report-sales-by-date.php" rel="nofollow noreferrer">includes/admin/reports/class-wc-report-sales-by-date.php</a><br></p>
  
  <p>I have to edit the 393 line, this variable: <strong>$this->report_data->total_sales</strong>
  I need to customize the <strong>Total Sales</strong> amount to add it another value.</p>
  
  <p>How can I override WooCommerce this core file?</p>