Code-Snippets-Functions/Execute a function on a child site/WooCommerce/add-text-suffix-to-item-quantity-checkout-page.txt

add_filter( 'woocommerce_checkout_cart_item_quantity', 'wtwh_echo_qty_front_add_checkout' );
function wtwh_echo_qty_front_add_checkout( $quantity_html ) {
    return $quantity_html . ' <span class="qty-suff">(Tonnes)</span>'; 
}