What is the procedure for strong and large pennis

What is the normal penis size in relax and erection time :
1. erection : 8-18 cm
2. relaxtion : at least 6 cm
How to increase penis size ?
- the only options to increase penis size in effective ways are the surgical options , which are :
1. there is a surgical option that may increase you penis size about 4-6 cm by cut out the internal tendons that connect pelvic area to your private area and leave bigger space to penis to increase 
2. there is a plastic surgery that increase penis size by implanting silicon implants in the upper areas of penis goes into the internal area of penis and it increase penis size around 6-8 cm
What are the costs of those surgeries ?
1. first surgical option ( cut out the internal tendons ) : 2000 - 3000 $ or more 
2. second surgical option ( implanting silicon implants ) : 10000 $ of more 
What is the recommanded penis enlargment creams ?
there is no recommanded products as its all totally unreal claims , there is no cream have the ability to increase penis size , and its all false claims 
- some product may help with sexual energy , but cant increase penis size 
General advices to increase your sexual ability :
1. following the healthy and appropriate way to do the sexual intercourse with your partner 
2. having a regular healthy diet 
3. doing exercises and give up bad habits like smoking and drinking alcohol 
4. avoiding stress and anxiaty sources 
- please avoid products or tools that claims it can increase penis size because its not medically approved and lack of long term effectiveness