How to display count data accumulation and residual data in table automatically? - php

Question

I have a problem, I use the straight-line method when displaying the accumulation and residue. I wonder how can I use php to automate the calculation.
This is the form used to submit the data:
<h1>Penyusutan</h1>
<table>
<form action="deprecalc.php" method="post">
<label>Nominal : </label>
<input type="text" name="nominal"><br>
<label>Lama Depresiasi : </label>
<input type="text" name="depresiasi"><br>
<label>Awal : </label>
<input type="text" name="awal"><br>
<label>Akhir : </label>
<input type="text" name="akhir"><br>
<label>Residu Aset : </label>
<input type="text" name="residu"><br>
<input type="submit">
</form>
</table>
This is the php handling:
<?php
$nominal = $_POST['nominal'];
$depresiasi = $_POST['depresiasi'];
$awal = $_POST['awal'];
$akhir = $_POST['akhir'];
$residu = $_POST['residu'];
?>
<h2>Nominal : <?php echo $nominal;?></h2></br>
<h2>Despresiasi : <?php echo $depresiasi;?></h2></br>
<table id="values">
<tr>
<th>Nominal</th>
<th>Tahun</th>
<th>Umur</th>
<th>Akumulasi</th>
<th>Residu</th>
</tr>
<?php
$no = 1;
$years = date('Y');
for ($i=0; $i < $depresiasi ; $i++) {
$rumus = ($nominal - $residu) / $depresiasi;
$rumusResidu = ($nominal - $rumus);
?>
<tr>
<?php echo "<td>".$nominal."</td>" ?>
<?php echo "<td>".$years++."</td>" ?>
<?php echo "<td>".$no++."</td>" ?>
<?php echo "<td>".$rumus."</td>" ?>
<?php echo "<td>".$rumusResidu."</td>" ?>
</tr>
<?php } ?>
</table>
And the result I have made:
Attached with the desired result: How do I achieve this? Thanks