Formular für automatische Aktualisierung
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<form action="">
<input type="number" name="amountUSD" value="1"><br/>
<input type="number" name="amountNGN" value="">
</form>
Bright Bison