wifi_price = int(input("Enter the monthly WiFi price (rupiah): "))
mik = float(input("Enter Mr. Mik's data usage (GB): "))
vin = float(input("Enter Mr. Vin's data usage (GB): "))
joji = float(input("Enter Mr. Joji's data usage (GB): "))

total = mik + vin + joji

mik_pay = wifi_price * mik / total 
vin_pay = wifi_price * vin / total 
joji_pay = wifi_price * joji / total

print("Mr. Mik pays Rp", int(mik_pay), sep="")
print("Mr. Vin pays Rp", int(vin_pay), sep="")
print("Mr. Joji pays Rp", int(joji_pay), sep="")