public function addon_template() {
			?>
			<div class="mortgage-calculator-addon">
				<h3><?php echo esc_html__( 'Mailchimp add-on', 'CalculatorsMailchimpAddon' ); ?></h3>
				<p><?php echo esc_html__( 'Description', 'CalculatorsMailchimpAddon' ); ?></p>
				<a href="#"
				   class="addon"><?php echo esc_html__( 'install add-on', 'CalculatorsMailchimpAddon' ); ?></a>
			</div>
			<?php
		}