Implementing a table

You could do it with 7 in parrallel or if you know the data rate is much less than your clock you can just pipeline it (ie. 1 request produces 9 clocks of results).

Its up to you how you design it.

But verifying with a 7 seg will be a bit of a chore. First of all verify the design in simulation with a testbench, then attach some communication core (like an RS232 port) so you can communicate with a PC.