I'm trying to show product price per unit in this file as a new column / TD. How do I get the price per unit?
app/design/frontend/PACKAGE/THEME/Magento_Sales/templates/email/items/invoice/default.phtml
<?php
/**
* Copyright © Magento, Inc. All rights reserved.
* See COPYING.txt for license details.
*/
?>
<?php $_item = $block->getItem() ?>
<?php $_order = $block->getItem()->getOrder(); ?>
<tr>
<td class="item-info<?= ($block->getItemOptions() ? ' has-extra' : '') ?>">
<p class="product-name"><?= $block->escapeHtml($_item->getName()) ?></p>
<p class="sku"><?= $block->escapeHtml(__('SKU')) ?>: <?= $block->escapeHtml($block->getSku($_item)) ?></p>
<?php if ($block->getItemOptions()) : ?>
<dl>
<?php foreach ($block->getItemOptions() as $option) : ?>
<dt><strong><em><?= $block->escapeHtml($option['label']) ?></em></strong></dt>
<dd>
<?= /* @noEscape */ nl2br($block->escapeHtml($option['value'])) ?>
</dd>
<?php endforeach; ?>
</dl>
<?php endif; ?>
<?php $addInfoBlock = $block->getProductAdditionalInformationBlock(); ?>
<?php if ($addInfoBlock) : ?>
<?= $addInfoBlock->setItem($_item->getOrderItem())->toHtml() ?>
<?php endif; ?>
<?= $block->escapeHtml($_item->getDescription()) ?>
</td>
<td class="item-qty"><?= (float) $_item->getQty() ?></td>
<td class="item-price">
<?= /* @noEscape */ $block->getItemPrice($_item->getOrderItem()) ?>
</td>
</tr>
