Dear please i have problem in this fomula i want to handle it thx

this fomula Calculat salary of each driver and element name is line with 5 input values ( pay value, day value type money, days type day, additional days typemoney,late days typemoney)

/**************** Calculat salary of each driver in elsewedy transformers ****************/

alias LINE_DAY_VALUE_ENTRY_VALUE as amount
alias LINE_LATE_VALUE_ENTRY_VALUE as ded
alias LINE_ADDITIONAL_DAYS_ENTRY_VALUE as add

Default for amount is 0
Default for ded is 0
Default for add is 0
Default for PEOPLE_ITINERARY is ' '

Inputs are Dae

v = amount*Dae
g = (amount*Dae)+add 
q = (amount*Dae)-ded

if PEOPLE_ITINERARY= 'Zagazig - El Sagha Itinerary First Shift' then