basic salary

basic_salary=int(input("The basic salary:"))
if basic_salary <= 10000:
    DA=0.80; HRA=0.20
elif 100001 <basic_salary <20000:
    DA=0.90; HRA=0.25
elif basic_salary >= 20001:
    DA=0.95; HRA=0.30
da=basic_salary*DA
hra=basic_salary*HRA
gross_salary=basic_salary+da+hra
print('The gross salary: ${:.2f}'.format(gross_salary))