JSFiddle - React, Tailwind, and code Playground
HTML
<input type="text" name="monto" id="monto" value="10"/>
<br><br>
<button id="sumar">
MULTIPLICA x 10
</button>JavaScript
$('button[id=sumar]').on('click', function(){
document.getElementById('monto').value = (document.getElementById('monto').value*10);
})