Total price in transactional e-mail magento

Avg Bid (USD)
$8 / hr
Project Budget (USD)
$2 - $8 / hr

Project Description:

We have transactional e-mails in our magento store. In one transactional mail we ask for a 30% downpayment to transfer to our bank account.

Please see the attachment for how it is now and how it should be:

Current code:

Totaal bedrag: € {{var order.getGrandTotal()}}Aanbetaling (30%): € {{var order.getGrandTotal()}} (/30)

This code shows 4 numbers after the , like 319.0000 and it should be 319.00
This code is not able to calculate 30% from grand total > it's this part Aanbetaling (30%): € {{var order.getGrandTotal()}} (/30)

So we need ,00 and 30% of the grand total in the second part, can someone make it for us?

Additional Project Description:
03/22/2013 at 19:04 ICT
So the problem is: html cannot calculate, however i need the 30% of the GrandTotal.

Hours of work: Unspecified Project Duration: < 1 week Skills required:
HTML, Java, Magento, PHP, Software Architecture
Additional Files: example+how+it+is+now.jpg example-how-it-should-be.jpg
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