[Plugin: wp e-commerce] automatically fill quantity field after calculation

Hello,

My question is about this page.
What I would like is that the calculated field (which is simply the amount of words divided by 150) to be reflected in the quantity field.
As it is now, the customer first needs to calculate and then copy the amount in the quantity field. I would like the customer to fill in the amount of words and automatically after which the amount of minutes is automatically filled.

Regards Chris

[No bumping. If it’s that urgent, consider hiring someone.]