The given Number is =9,999,999
Place value of number in Unit Place=9
Place value of number in Tens Place=9×10=90
⇒Place value of number in Tens Place=10×Place value of number in Unit Place
Place Value of Number in Hundreds Place =9×100=900
⇒Place value of number in Hundred's Place=10×Place value of number in Ten's Place
Place value of number in Thousand Place=9×1000=9,000
⇒Place value of number in Thousand Place=10×Place value of number in Hundred Place
Place value of number in Ten Thousand Place=9×10000=90,000
⇒Place value of number in Ten Thousand Place=10×Place value of number in Thousand Place
Place value of number in Hundred Thousand Place=9×100000=900,000
⇒Place value of number in Hundred Thousand Place=10×Place value of number in Ten Thousand Place
Place value of number at Million's Place=9×1000000=9,000,000
⇒Place value of number in Million Place=10×Place value of number in Hundred Thousand Place
⇒There are many more relations that you can write , between place value of Different 9's.