John climbs up 9 flights of stairs.  Each flight is 10 feet.  If each step is 18 inches, how many steps does he climb up?
He has to climb 9*10=<<9*10=90>>90 feet
That means he needs to climb 90*12=<<90*12=1080>>1080 inches
That means he needs to climb 1080/18=<<1080/18=60>>60 stairs
#### 60