def taxcalc(TI):
    if TI >= 0 and TI <= 6000:
        TT = 0
    if TI >= 6001 and TI <= 37000:
        TT = (TI - 6000) * 0.15
    if TI >= 37001 and TI <= 80000:
        TT = ((TI - 37000) * 0.30) + 4650
    if TI >= 80001 and TI <= 180000:
        TT = ((TI - 80000) * 0.37) + 17550
    if TI >= 180000:
        TT = ((TI - 180000) * 0.45) + 54550

def nicalc(TI, TT):
    NI = TI - TT
    #Convey the total tax, net income, and gross income
    taxconvey(TT, NI, TI)

def taxconvey(TT, NI, TI):
    print ('The total tax is: %.2f' % TT)
    print ('The net income is: %.2f' % NI)
    print ('The gross income is: %.2f' % TI)

def main():
    print ('Program Starting...')
    #Gather taxable income from the user
    TI = float (input ('Enter taxable income: '))
    #Calculte the total tax and net income
    taxcalc(TI)
    nicalc(TI, TT)
    print ('Program Finished')

main()