Ways to employ data binding for extracting a user-input value and performing multiplication operations with the enclosed {{ ...}} tags

My API response includes the price of a product, which is represented as {{price}}

I have a system where I can add or reduce the number of products:

<div class="number-input"> <h2>Price: {{price }}</h2>
        <button onclick="this.parentNode.querySelector('input[type=number]').stepDown()" >-</button>
        <input #qty class="quantity" min="0" max="25" name="quantity" type="number" id="quan" ngModel>
         <button onclick="this.parentNode.querySelector('input[type=number]').stepUp()" class="plus">+</button>
      </div>

I would like to calculate something like {{price * input.value}}. How can I achieve this in Angular 11?

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