Answer:
[tex]225[/tex]
Step-by-step explanation:
[tex]\frac{9\cdot \:10^8}{4\cdot \:10^6}=\frac{9\cdot \:10^{8-6}}{4}=\frac{10^2\cdot \:9}{4}[/tex]
[tex]\frac{10^2\cdot \:9}{4}=\frac{2^2\cdot \:5^2\cdot \:9}{2^2}[/tex]
Cancel out common factor:
[tex]5^2\cdot \:9=25\cdot \:9=225[/tex]
