Complex SUM With ROUNDing - All In One Cell Possible?

I am an experienced Excel user, but it does not seem possible for this formula to be written all within one single cell. The SUM combines rounding a known value, followed by calculations, and subtracting a rounded number with modified calculations.

This is the formula which does work, although I would prefer for the sake of accuracy (and succeeding in the task of making the formula do exactly what I wanted it to do!!):

=ROUND(SUM(T9/1.5)/5,0)*(5)*(6.5%)+(26.25+15.81+1)+SUM((T9/1.5)*(6.5%)+26.25+15.81+1)*19%

The value of T9 is 2283.3 recurring.


There are two main parts to the SUM:

=ROUND(SUM(T9/1.5)/5,0)*(5)*(6.5%)+(26.25+15.81+1)

...and:

+SUM((T9/1.5)*(6.5%)+26.25+15.81+1)*19%


The challenge is to insert another:

=ROUND(SUM(T9/1.5)/5,0)*(5)

in replacement of:

=SUM((T9/1.5)

I'm aware that the use of brackets differs between the two sections of the sum, but it is neccessary to allow the correct answer.

Is this too much for one poor cell to handle?