Okay Rosala let's think about this.
FIRST: You tell me if you agree with these statements.
\\10^8\div 10^3=10^{8-3}=10^5\qquad&(1)\\\\ \frac{10^9}{10^4}=10^{9-4}=10^5\qquad(2)\\\\
okay so
\\10^2\div 10^2=10^{2-2}=10^0\\\\ but\\\\ 10^2\div 10^2=100\div 100=1\\\\ so\\ 10^0=1\\\\ ALSO\\ \frac{10^3}{10^3}=\frac{1000}{1000}=1 $ But it also equals } 10^{3-3}=10^0\\\\ $ So again $ 10^0=1