How to multiply 2 values in ionic

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Hello Guys, How are you.I hope you will be fine guys I have started my new ionic project and the projects is working well but I have an issue with multiplication can you please guide me how can I sum 2 values in ionic and show in 3rd

<td>{{item.item_qty}}</td>

<td>{{item.product_price}}</td>

i want to multiply this 2 values and show in 3rd
Thanks

What I have tried:

<ion-view style="" class=" " id="page10" title="Orders">
    <ion-content class="has-header" padding="true">
 <ion-refresher
    pulling-text="Pull to refresh..."
    on-refresh="doRefresh()">
  </ion-refresher>
        <style>
table {
    border-collapse: collapse;
    width: 100%;
}

th, td {
    text-align: left;
    padding: 8px;
}

tr:nth-child(even){background-color: #f2f2f2}

th {
    background-color: #4CAF50;
    color: white;
}
</style>
        <div style="overflow-x:auto;">
     <table>
  <thead>
    <tr>
      <th width="200">Product Qty</th>
      <th>Product Name</th>
      <th width="150">Status</th>
      <th width="150">Total</th>
    </tr>
  </thead>
  <tbody>
    <tr ng-repeat="item in orders" class="animated fadeInUp">
      <td>{{item.item_qty}}</td>
      <td>{{item.product_name}}</td>
      <td>{{item.status}}</td>
      <td>{{item7.product_price}}</td>
    </tr>
  </tbody>
</table>
</div>

    </ion-content>
</ion-view>