[tex]\sf \longmapsto \frac{9}{2} \div \frac{2}{9} [/tex]
[tex]\sf \longmapsto \frac{9}{2} \times \frac{9}{2} [/tex]
[tex]\sf \longmapsto \frac{9 \times 9}{2 \times 2} [/tex]
[tex]\sf \longmapsto \frac{81}{4} [/tex]
Answer as a whole number:
[tex]\sf \longmapsto20 \frac{1}{4} [/tex]
