How can we print multi invoices at once

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VB

ASP

Hello,

I have 150 invoice that need to be printed on one click, 3 invoices will be fit on a single A4 page, what is the best scenario that can be used to establish such a task.

Knowing that it is a web application using Asp , vb.net.

What I have tried:

ive added them to a single html page but they are not fitting in it as needed ( 3 per A4 Page)