Counting rows and then dividing a value

[NY2BOS]

Hello all I'm looking to allocate a number based on the the amount of rows in a specific field 

For example:
I get DOG TOTAL:$50

My rows should show 
NAME     TYPE     VALUE

DOG1      DOG     $10

DOG2      DOG     $10 
DOG3      DOG     $10
DOG4      DOG     $10

DOG5      DOG     $10

so for every type dog the total should be spit evenly between all the values even if I add 5 more rows it should recalculate to $5/Name 

Thank you in advance 

[cjaneczko]

I dont know how your data is structured but this should do it.

[aatalai]

Could you use the summarise tool to calculate average grouped type and then join the results with the starting data set joining type, fewer tools