Knockout foreach generate html fields

I want to display as many fields as user wants.

Maybe you have idea how can I do this case using foreach loop in Knockout framework.

For example numberOfFields is input field where user can enter how many fields he wants to display

<input id="numberOfFields" type="text" data-bind="value: obj().numberOfFields() />
<div data-bind="foreach: new Array(obj().numberofCashFlows())">
   <label for="quantity$index()">Flow number $index()</label>
   <input id="quantity$index()" type="text" data-bind="value: quantityArray[$index()]" />
</div>

Of course code doesn't work, I want to tell you what I mean.

If user enters 3 I want to show 3 labels and inputs with id quantity1, quantity2, quantity3 and with values: quantityArray[0], quantityArray[1], quantityArray[2]

Can you help me or give some advice?