formula1's result as variable in formula2. how?

formula1's result as variable in formula2. how?

hi 

i have 5 too complex formulas in my application
each formula has a result - result1, result2, result3, result4, result5

in what way can i use result1 as a variable in formula 2 ? and other formulas

right now i just copy full code from formula1 to formula2.
this make application code too complex