NAM MYOHO RENGE KO
What is the meaning of this chant?
What is the significance?
Is it for spiritual advancement or for material gains?
You are Refering to the chant Namu Myoho Renge Kyo
used in Nichiren Buddhism.
It is used for a spiritual elevation, to connect with the divine and be free from attachment. It is a chant that will serves as an anchor in time of trouble and keep them on their spiritual path.
As for the meaning, please visit the link above for a detailed explanation of the characters forming the mantra.
Namu Myoho Renge Kyo is not used for material gains but it is the belief of practitioners that by reciting it daily, meditating and having a good life, life will be easier and good things will happen to the righteous person. This might include, or not, financial gains. It is not meant to be a magic formula to attract money to you.
I hope this answers your question and if anyone has further information, please add it in the comment section below.
Your friendly webmaster Hugo