Calculate how many races needed to find N fastest cars

fastest_car.py

##
## Bismillaahirrahmaanirrahiim..
## Allahumma sholli 'alaa sayyidinaa Muhammad..
## 
## fastest_car.py
## created by marjuqi r.
## august 2018
## 
## run using : python fastest_car.py
##
## this app used to calculate how many race needed to find N_FASTEST_CAR fastest cars
## if each race is consist of N_GROUP_MEMBER cars
## and the output of each race is N_FASTEST_CAR cars
## 

print("====================")
print ("salam,\nthis app used to calculate \nhow many race needed to find \nN_FASTEST_CAR fastest cars")
print("====================")

N_GROUP_MEMBER = 5
N_FASTEST_CAR  = 3

# total car in the beginning
n_car = 10

print("")
print("=> n car : " + str(n_car))

if(n_car<=N_GROUP_MEMBER):
 print("=> total n race : 1")
else:
 wait = 0
 n_group = 0
 n_race = 0
 while(n_car>N_GROUP_MEMBER):
  print("")
  print("r car: " + str(n_car))
  n_group  = int(n_car/N_GROUP_MEMBER)
  wait     = n_car%N_GROUP_MEMBER
  n_race   += n_group
  n_car    = wait + (N_FASTEST_CAR*n_group)
  print("r group: " + str(n_group))
  print("r wait: " + str(wait))
  print("r car next: " + str(n_car))
  print("r race so far: " + str(n_race))
 print("")
 print("=> total n race : " + str(n_race+1))
 print("")