How to add cart totals - php

Question

I have no idea of php so I was wondering if I can get help from you guys.
So basically this is my code for woocommerce minicart.
Right now when I click on a single item to buy twice the cart counter stays on 1, when instead I obviously want 2 as it is the total.
I am aware of the things saying here, but I can't seem to find where to put the code. I tried everything and I can't make those totals to show up.
If someone can tell me which part exactly should be changed I would very much appreciate it. Thanks in advance!
<?php
/**
* Mini-cart
*
* Contains the markup for the mini-cart, used by the cart widget.
*
* This template can be overridden by copying it to yourtheme/woocommerce/cart/mini-cart.php.
*
* HOWEVER, on occasion WooCommerce will need to update template files and you (the theme developer).
* will need to copy the new files to your theme to maintain compatibility. We try to do this.
* as little as possible, but it does happen. When this occurs the version of the template file will.
* be bumped and the readme will list any important changes.
*
* #see http://docs.woothemes.com/document/template-structure/
* #author WooThemes
* #package WooCommerce/Templates
* #version 2.5.0
*/
if ( ! defined( 'ABSPATH' ) ) {
exit; // Exit if accessed directly
}
?>
<?php do_action( 'woocommerce_before_mini_cart' ); ?>
<ul class="cart_list products-list product_list_widget <?php echo $args['list_class']; ?>">
<?php if ( ! WC()->cart->is_empty() ) : ?>
<?php
foreach ( WC()->cart->get_cart() as $cart_item_key => $cart_item ) {
$_product = apply_filters( 'woocommerce_cart_item_product', $cart_item['data'], $cart_item, $cart_item_key );
$product_id = apply_filters( 'woocommerce_cart_item_product_id', $cart_item['product_id'], $cart_item, $cart_item_key );
if ( $_product && $_product->exists() && $cart_item['quantity'] > 0 && apply_filters( 'woocommerce_widget_cart_item_visible', true, $cart_item, $cart_item_key ) ) {
$product_name = apply_filters( 'woocommerce_cart_item_name', $_product->get_title(), $cart_item, $cart_item_key );
$thumbnail = apply_filters( 'woocommerce_cart_item_thumbnail', $_product->get_image(), $cart_item, $cart_item_key );
$product_price = apply_filters( 'woocommerce_cart_item_price', WC()->cart->get_product_price( $_product ), $cart_item, $cart_item_key );
?>
<li>
<?php if ( ! $_product->is_visible() ) : ?>
<?php echo str_replace( array( 'http:', 'https:' ), '', $thumbnail ) . $product_name . ' '; ?>
<?php else : ?>
<a class="title" href="<?php echo esc_url( $_product->get_permalink( $cart_item ) ); ?>">
<?php echo str_replace( array( 'http:', 'https:' ), '', $thumbnail ) . $product_name . ' '; ?>
</a>
<?php endif; ?>
<?php echo WC()->cart->get_item_data( $cart_item ); ?>
<?php echo apply_filters( 'woocommerce_widget_cart_item_quantity', '<span class="quantity">' . sprintf( '%s × %s', $cart_item['quantity'], $product_price ) . '</span>', $cart_item, $cart_item_key ); ?>
<?php echo apply_filters( 'woocommerce_cart_item_remove_link', sprintf( '<i class="fa fa-times-circle"></i>', esc_url( WC()->cart->get_remove_url( $cart_item_key ) ), __( 'Remove this item', 'snssimen' ) ), $cart_item_key ); ?>
</li>
<?php
}
}
?>
<?php else : ?>
<li class="empty"><?php _e( 'No products in the cart.', 'snssimen' ); ?></li>
<?php endif; ?>
</ul><!-- end product list -->
<?php if ( sizeof( WC()->cart->get_cart() ) > 0 ) : ?>
<p class="total"><?php _e( 'Total', 'snssimen' ); ?>: <strong><?php echo WC()->cart->get_cart_subtotal(); ?></strong></p>
<?php do_action( 'woocommerce_widget_shopping_cart_before_buttons' ); ?>
<p class="buttons">
<?php _e( 'Go to Cart', 'snssimen' ); ?>
<?php _e( 'Checkout', 'snssimen' ); ?>
</p>
<span style="display:none" class="sns-cart-number">
<?php echo sizeof( WC()->cart->get_cart() ) ?>
<?php //echo $woocommerce->cart->cart_contents_count; ?>
</span>
<?php endif; ?>
<?php do_action( 'woocommerce_after_mini_cart' ); ?>